Rasheeda sees a garden in a book. She changes the scale because she wants a garden with different dimensions. The figure below shows both scales and a scale drawing of the garden.

To make accurate comparisons between the gardens based on their respective scales, we will first convert the dimensions of both gardens according to the scales given.

1. **Book Scale: 1 inch = 2 feet**
- Length A in the book: 18 inches
- Conversion: 18 inches * 2 feet/inch = 36 feet
- Width B in the book: 6 inches
- Conversion: 6 inches * 2 feet/inch = 12 feet

2. **Rasheeda's Scale: 2 inches = 3 feet**
- We can convert Rasheeda's dimensions back into feet using the same concept.
- Length A in Rasheeda's garden: 18 inches
- Conversion:
\[
\frac{18 \text{ inches}}{2 \text{ inches}} \times 3 \text{ feet} = 27 \text{ feet}
\]
- Width B in Rasheeda's garden: 6 inches
- Conversion:
\[
\frac{6 \text{ inches}}{2 \text{ inches}} \times 3 \text{ feet} = 9 \text{ feet}
\]

Now, let's summarize the dimensions:
- Length A of the book's garden: **36 feet**
- Width B of the book's garden: **12 feet**
- Length A of Rasheeda’s garden: **27 feet**
- Width B of Rasheeda's garden: **9 feet**

Now let’s evaluate each statement:

1. **Length A of the book’s garden is 18 ft.** - **False** (It's actually 36 feet).
2. **Length A of Rasheeda’s garden is 27 ft.** - **True**.
3. **Length B of the book’s garden is 12 ft.** - **True**.
4. **Length B of Rasheeda’s garden is 6 ft.** - **False** (It's actually 9 feet).
5. **Length A of the book’s garden is 9 ft longer than length A of Rasheeda’s garden.** - **False** (36 feet - 27 feet = 9 feet difference, but it's not accurate to say "9 ft longer").
6. **Length B of the book’s garden is 3 ft shorter than length B of Rasheeda’s garden.** - **True** (12 feet - 9 feet = 3 feet shorter).

The three true statements are:
- Length A of Rasheeda’s garden is 27 ft.
- Length B of the book’s garden is 12 ft.
- Length B of the book’s garden is 3 ft shorter than length B of Rasheeda’s garden.