单选题

下列选项中属于列表的是(    )

A

list1 = ['physics', 'chemistry', 1997, 2000]

B

list2 = ('physics', 'chemistry', 1997, 2000)

C

list3 = 'physics', 'chemistry', 1997, 2000

D

list4 = {'physics', 'chemistry', 1997, 2000}

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