The probabilities by subject of on-time assignment submission and on-time arrival in class are given in the table.

Subject On-time Assignment Submission On-time Arrival in Class
Physics 89.7% 82.3%
Math 88.2% 88.7%
Chemistry 89.4% 83.1%
Biology 90.1% 82.4%
Total 88.5% 84.7%

What is the probability of on-time arrival in class given that the subject is biology?
A. 90.1%
B. 88.5%
C. 84.7%
D. 82.4%
E. insufficient data

PLEASE HELP! THANK YOU!