Which of the following mathematical expressions is equivalent to the verbal expression "a number, X,
squared is 18 less than the product of 11 and x" ?
A. 2x = 11x-18
B. 2x = x^11 - 18
C. x^2 = 18-11x
D. x^2 = 11x + 18
E. x^2 = 11x-18