2,5,9,34,115,()。
A.1271
B.1237
C.3910
D.13259
请帮忙给出正确答案和分析,谢谢!
:5 12 21 34 53 80 () A.121B.115C.119D.117
5,12,21,34,53,80,()A.121 B.115 C.119 D.117
5,12,21,34,53,80,() A.115 B.117 C.119 D.121
5,12,2l,34,53,80,() A.115 B.117 C.119 D.121
5,12,2l,34,53,80,() A.115B.117C.119D.121
2, 5, 9, 34, 115, ()。 A.1271 B.1237 C.3910 D.13259