WILL UPVOTE PLZ HELP NEED ANSWERS ASAP

Arlene casts a shadow of 5 ft. and she is 6 ft. tall. A billboard casts a shadow of 35 ft. at the same time that Arlene measured her shadow. Calculate how tall the billboard is.

A.35 ft.

B.40 ft.

C.42 ft.

D.30 ft.