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

Barbara glued lids onto 16 cardboard shoe boxes of equal size. She painted eight of the boxes black and eight of the boxes white. Barbara 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. Barbara 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 Barbara's experiment can best answer.
A. Do the temperatures inside boxes depend on the sizes of the boxes?
B. Do the insides of white boxes get hotter than the insides of black boxes when the boxes are left in the sun?
Identify the correct option from the choices provided and respond with the letter of the correct option.
Answer: B