Choose the Answer Which Best Rewords the Italicized Portion

Choose the answer which best rewords the italicized portion. If you think the original wording is best, choose option A.
-In the past, residents used the wood for cooking and heating, but recently, they have began to sell it in order to support their livelihoods.

A) heating, but recently, they have began to sell it
B) heating. But they had recently began to sell it
C) heating. Recently, they have begun selling it
D) and they were selling it