90 students represent x percent of the boys at Jones Elementary School. If the boys at Jones Elementary make up 50% of the total school population of x students, what is x?	Choose the correct choice from the following choices:	A) 134	B) 150	C) 225	D) 250	E) 500

Rationale: "90 = x / 100 * 50 / 100 * x = > x ^ 2 = 9 * 10000 / 5 = > x = 134 a"
Answer: A