Total Revenue Is in Dollars and X Is the Number

Multiple Choice

Total revenue is in dollars and x is the number of units. Suppose that the total revenue function for a commodity is Find , and tell what it represents. ​

A) $9.60. This represents the revenue from the sale of 40 units.
B) $478.80. This represents the marginal revenue from the sale of 40 units.
C) $480.00. This represents the marginal revenue from the sale of 40 units.
D) $432.00. This represents the revenue from the sale of 40 units.
E) $1.20. This represents the revenue from the sale of 40 units.