Answer:
Option A is the correct answer.
Explanation:
A painting measures 15 cm long by 24 cm high.
Height to length ratio

The first poster measures 45 cm long by 72 cm high
Height to length ratio

The second poster measures 97.5 cm long by 156 cm high
Height to length ratio

All the ratios are similar, so both posters are an accurate representation of the painting.
Option A is the correct answer.