Suppose $\sum a_n$ and $\sum b_n$ are series with positive terms and $\sum b_n$ is known to be divergent. If $a_n < b_n$ for all $n$, what can you say about $\sum a_n$?

A. $\sum a_n$ converges by Comparison Test.

B. $\sum a_n$ diverges by Comparison Test.

C. We cannot say anything about $\sum a_n$.