Read the paragraph.

Not long ago, I decided I needed more exercise, so I began swimming at the local recreation center almost every day. I like to swim in the local pool because my friends also exercise at the center. Last Saturday morning, I saw my school principal making laps across the swimming pool. What a surprise it was!

Which revision corrects the misplaced modifier in the paragraph?

Responses
A Last Saturday morning, while making laps across the swimming pool, I saw my school principal.Last Saturday morning, while making laps across the swimming pool, I saw my school principal.
B I saw my school principal making laps across the swimming pool last Saturday morning.I saw my school principal making laps across the swimming pool last Saturday morning.
C Last Saturday morning, across the swimming pool, I saw my school principal making laps.Last Saturday morning, across the swimming pool, I saw my school principal making laps.
D I saw my school principal last Saturday morning across the swimming pool.

B I saw my school principal making laps across the swimming pool last Saturday morning.