Read the sentence.
Swimming through the ocean, the fin of the whale slapped against the water.
Which option best revises the sentence to correct the dangling modifier?
A: Through the ocean and slapping a fin against the water, a gray whale swam.
B: A gray whale slapped its fin, swimming through the ocean, against the water.
C: A gray whale was swimming through the ocean, slapping its fin against the water.
D: Slapping its fin against the water, a gray whale has been swimming through the ocean.