Select the correct passive form of the given sentence.
When we reached the beach, the fishermen were offloading the fish.

A

When we reached the beach, the fish were being offloaded by the fishermen.

B

When we reached the beach, the fish have been offloaded by the fishermen.

C

When we reached the beach, the fishermen were being offloaded by the fish.

D

When we reached the beach, the fish were offloading the fishermen.