Context: The passage below describes an experiment. Read the passage and then follow the instructions below.

Jackie glued lids onto 16 cardboard shoe boxes of equal size. She painted eight of the boxes black and eight of the boxes white. Jackie made a small hole in the side of each box and then stuck a thermometer partially into each hole so she could measure the temperatures inside the boxes. She placed the boxes in direct sunlight in her backyard. Two hours later, she measured the temperature inside each box. Jackie compared the average temperature inside the black boxes to the average temperature inside the white boxes.
Figure: a shoebox painted black.
Identify the question that Jackie's experiment can best answer.
A. Do the insides of white boxes get hotter than the insides of black boxes when the boxes are left in the sun?
B. Do the temperatures inside boxes depend on the sizes of the boxes?
Choose the right answer from the options and respond with its letter.

A