If $q$ is one root of the equation $x^2 + 18x + 11c = 0,$ where $-11$ is the other root and $c$ is a constant,

If $q$ is one root of the equation $x^2 + 18x + 11c = 0,$ where $-11$ is the other root and $c$ is a constant, then $q^2-c^2 =$

A) 98
B) 72
C) 49
D) 0
E) It can't be determined from the information given.

Answer: D

Source: Princeton Review

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