In the half yearly exam only `70%` of the students were passed. Out of these (passed in half yearly) only `60%` students are passed in annual exam. Out of those who did not pass the half yearly exam , `80%` passed in annual exam . What per cent of the students passed the annual exam ?

Options

A. `70%`
B. `75%`
C. `66%`
D. `50%`

Answer

C