Three part question

A software entertainment company recently ran a holiday sale on its popular software program. Using data collected from the sale, it is possible to estimate the demand corresponding to various discounts in the price of the software. Assuming that the original price was $36, the demand for the software can be estimated by the function q=3,742,000p , where p is the price and q is the demand. Calculate and interpret the elasticity of demand. d: ore What formula should be used to compute the elasticity of demand, E, if q is demand at a price p? QU O A. E = P . q dp dq on O B. E= _ P. dq on 9 O C. E=p - dq ons O D. E = q - dp