Subject: mathqa
Question: in the seaside summer camp there are 50 children . 90 % of the children are boys and the rest are girls . the camp administrator decided to make the number of girls only 5 % of the total number of children in the camp . how many more boys must she bring to make that happen ?
Option: 
A: 40 .
B: 30 .
C: 25 .
D: 50 .
Answer: D