Rachel is describing an event in a narrative piece she is writing. Which sentence uses a transitional word that best indicates a shift from one time frame to another?

A When we made it back to shore, we were exhausted but happy to be back on land.

B It took us an hour to paddle over to the other side of the lake and back.

C Kayaking on the lake is fun, but we didn’t realize how far we had gone.

D Since then, we have decided to kayak along the shoreline on this side of the lake