The phrase "the ratio of five colon" seems to be slightly ambiguous. However, based on your options (A: 72, B: \( \frac{2}{5} \), C: tenths, D: 52), it seems like you're asking how to express the ratio of 5:1 (five colon one) or possibly just the number 5 in different forms.
To express the ratio of 5 as a fraction, you can do:
- 5:1 can be written as \( \frac{5}{1} \).
If you are looking for the options provided to find a specific ratio related to 5, please clarify or provide more context, and I'd be happy to assist!