已知等差数列{a_n}满足：a₁+a₃=8，S₅=30，若等比数列{b_n}满足b₁=a₁，b₃=a₄，则b₅为

1. A.
   16
2. B.
   32
3. C.
   64
4. D.
   27

A.16               B.32             C.64                D.27