A tale of two cities

What conflict does Darnay face when he returns to Paris and tries to save Gabelle?

A. Gabelle turns Darnay over to the revolutionaries, so Gabelle can win his freedom.

B. Darnay arrives late, only to find that Gabelle has been executed by guillotine,

C. Darnay is captured and imprisoned by the revolutionaries because he's an Evrémonde.

D. Gabelle writes to Darnay as a way to get Darnay back to Paris for the revolutionaries.