A positive number x is multiplied by 7, and this product is then divided by 3. If the positive square root of the result of these two operations equals x, what is the value of x ?  Pick one:  A) 7 / 3  B) 3 / 2  C) 4 / 3  D) 2 / 3  E) 1 / 2

Rationale: "sq rt ( 7 x / 3 ) = x = > 7 x / 3 = x ^ 2 = > x = 7 / 3 ans - a"
Answer: A