单选题

执行下列Python程序,最后的输出是(    )?

lst = [1,2,7,10,15,17,22]

result = d =3


for i in range(1,len(lst)):

if lst[i] - lst[i-1] >d:

result +=d

else:

result lst[i] - lst[i-1]

print(result)

A

14

B

16

C

18

D

20

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