To determine the cost per pound for McIntosh apples, we can calculate the cost per pound from the provided data:
- For 2 pounds, the cost is $3.70, so the cost per pound is \( \frac{3.70}{2} = 1.85 \).
- For 3 pounds, the cost is $5.55, so the cost per pound is \( \frac{5.55}{3} = 1.85 \).
- For 4 pounds, the cost is $7.40, so the cost per pound is \( \frac{7.40}{4} = 1.85 \).
From the calculations, the cost per pound for McIntosh apples is $1.85.
Since we do not have the cost per pound for Granny Smith apples provided, we cannot make a direct comparison. However, based on the options given, if we assume McIntosh apples cost $1.85, this makes the correct response:
McIntosh apples are cheaper at $1.85 per pound.