In the Following Formula, F(x) Is the Minimum Number of Hours

Multiple Choice

In the following formula, f(x) is the minimum number of hours of studying required to attain a test score of x: $$f ( x ) = \frac { 0.52 x } { 100.5 - x }$$ How many hours of study are needed to score 96?

A) 21.45 hr
B) 99.96 hr
C) 110.90 hr
D) 11.09 hr