Task: Question Answering
Input (English): Question: Of the sixteen participants in a certain competition, half are male, and half of the males are younger than 18 years of age. If half of the female competitors are also younger than 18 years of age, into how many distinct groups of 4 competitors could the participants be divided if each group must contain two males under 18 years of age and 2 females over 18 years of age?

 Option A: 3

 Option B: 4

 Option C: 36

 Option D: 9

 Option E: 20
Output (English): Option C