Which sentence below contains an incorrect verb form?
A.Each became more worried about the safety of the mammals as the pod snorted above the water for air.
B. When Saturday arrives, many people had started to gather around the banks of the channel.
C. The pod of whales found their way into the fresh water channel early Friday morning.
D. Soon, the town of Hobbler's Fare became a media circus as news outlets began covering the story.