In a University there are 1200 students studying four different subjects, Mathematics, Statistics, Physics and Chemistry. 20% of the total number of students are studying Mathematics, one-fourth of the total number of students are studying Physics, 320 students are studying Statistics and remaining students are studying Chemistry. Three-fifth of the total number of students studying Chemistry are girls. 150 boys are studying Mathematics. 60% of students studying Physics are boys. 250 girls are studying Statistics.
The number of girls studying Statistics is what percent (approximate) of the total number of students studying Chemistry?

Options

A. `58.8`
B. `73.5`
C. `78.7`
D. `80.6`