To Answer the Question,refer to the Following Table Showing a Demand

Multiple Choice

To answer the question,refer to the following table showing a demand schedule: $\begin{array}{llcc}\underline{ \text {Price } }&\underline{ \text { Ouantity } } \\ &\underline{\text {demanded }} \\\$200 &1000\\150&1400\\100 &1800\\\end{array}$ As quantity demanded rises from 1,400 to 1,800,what is marginal revenue?

A) $25
B) $50
C) -$400
D) -$50
E) -$75