For the Demand Function Q = 150(245 - $p ^ { 2 }$

Multiple Choice

For the demand function q = 150(245 - $p ^ { 2 }$ ) , find E(p) and determine if the demand is elastic or inelastic (or neither) at the price p =7.

A) E(p) = $\frac { p ^ { 2 } } { 245 - p ^ { 2 } }$ , elastic
B) E(p) = $\frac { 2 p ^ { 2 } } { 245 - p ^ { 2 } }$ , elastic
C) E(p) = $\frac { p ^ { 2 } } { 245 - p ^ { 2 } }$ , inelastic
D) E(p) = $\frac { 2 p ^ { 2 } } { 245 - p ^ { 2 } }$ , inelastic