Answer right I will mark brainliest

Marvin walked along the shadowy sidewalk quickly. Suddenly, he heard
the crack of a twig behind him. He turns around to see someone was
following him. A chill ran down his spine.
Which of these revisions corrects the inappropriate shift in verb tense?
A. He turned around to see
B. someone is following him
C. he was hearing the crack
D. A chill runs down his spine