A Fireman,50 $\degree$ Above the Horizontal

Multiple Choice

A fireman,50.0 m away from a burning building,directs a stream of water from a fire hose at an angle of 30.0 $\degree$ above the horizontal.If the initial speed of the stream is 40.0 m/s,at what height will the stream of water strike the building?

A) 9.60 m
B) 13.4 m
C) 18.7 m
D) 22.4 m