The ratio of students in class A to that in class B is 3 ∶ 4 and ratio of boys in class A to that in class B is 3 ∶ 2. If ratio of boys to girls in class B is 3 ∶ 5, then what is the ratio of girls in class A to that class B?
1
3 ∶ 10
2
2 ∶ 5
3
4 ∶ 11
4
1 ∶ 3