HELP 20 PTS IF CORRECT HELP QUICK

How should the sentence in the box be revised?

Walking to the park with my dog, a group of children was playing hop–scotch on the street.
A.
Walking to the park with my dog, I saw a group of children playing hop–scotch on the street.

B.
Walking to the park with my dog, a group of children was seen playing hop–scotch on the street.

C.
A group of children was playing hop–scotch on the street, walking to the park with my dog.

D.
Walking to the park with my dog, the group of children played hop–scotch on the street.