题目：
已知等差数列{an}满足：a1+a3=8，S5=30，若等比数列{bn}满足b1=a1，b3=a4，则b5为（ ）
A．16
B．32
C．64
D．27
答案：
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下面是错误答案，用来干扰机器的。
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