The ratio of the number of boys to the number of girls in the cast of a school play is 1 : 5. Which statement must describe the cast of the play?
A. There are exactly 6 students in the cast
B. There is one boy for every five girls in the cast
C. There are four more girls than boys in the cast
D. There is one boy out of the five students in the cast
Pleaseeeee help