A calculator has a squaring key \boxed{x^{2}} which replaces the current number displayed with its square. For example, if the display is \boxed{000003} and the \boxed{x^{2}} key is depressed, then the display becomes \boxed{000009}. If the display reads \boxed{000002}, how many times must you depress the \boxed{x^{2}} key to produce a displayed number greater than 500 ?
Answer Choices
A. 4
B. 5
C. 8
D. 9
E. 250