Read the sentence.

Last year at the City Science Exhibition, three projects were presented by the students of our school.

Which revision changes the sentence from the passive voice to the active voice?
A.
Three projects were presented by the students of our school last year at the City Science Exhibition.
B.
Last year, the students of our school presented three projects at the City Science Exhibition.
C.
Last year, the City Science Exhibition had three projects presented by the students of our school.
D.
Three projects were presented at the City Science Exhibition last year by the students of our school.