Which sentence does not contain misplaced or dangling modifiers?

ASunk at sea, the coast guard could not find the boat with three people aboard.

BThe coast guard could not find the boat sunk at sea with three people aboard.

CSunk at sea with three people aboard, the coast guard could not find the boat.

DThe coast guard, sunk at sea with three people aboard, could not find the boat.

Please help! I'm stuck, only answer if you are 100% sure