Multi-select problem: How does the next paragraph end?

A woman walks to the bank of a river holding a camera. Suddenly, two men appears sailing in inflatable boats while the woman takes pictures. other people

a). is rowing in the boats.
b). sail on individual boats in the choppy waters in the river.
c). sail in inflatable boats while standing on a bridge.
d). are shown riding the boats and a person who saves a man's life.
b).