Select the correct answer. Three museums charge an entrance fee based on the number of visitors in the group. The table lists the fees charged by the museums. At which museum is the entrance fee proportional to the number of visitors?

Museum A
Museum B
Museum C
Visitors
Fee ($)
Visitors
Fee ($)
Visitors
Fee ($)
2
4
1
2
3
4
3
5
4
8
12
16
4
6
6
11
18
24

A.
museum A
B.
museum B
C.
museum C
D.
museum A and museum B
what is this
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