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Python程序设计单选题中等

以下哪条语句写法错误?

Aif x == 1: print('x是1')
Bif x == 1: print('x是1') else: print('x不是1')
Cif x == 1: print('x是1') elif x == 2: print('x是2')
Dif x == 1: print('x是1') else if x == 2: print('x是2')