Checking the validity of given statements

Indicate whether each of the following statements is true or false, and explain why. If a statement is false or true, please provide a full explanation as to why that statement is correct or not.

a. Consumer surplus is the difference between the minimum and maximum price a consumer is wiling to pay for a good.
b. Producer surplus is the difference between the actual price a producer receives for a product and the minimum price the producer would have been willing to accept for the product.
c. For Good A, supply elasticity is +2.5 and price elasticity of demand is -1.5. If an excise tax is imposed on Good A, sellers will pay the more of this tax than buyers.
d. A perfectly competitive firm can maximize its economic profit or minimize its losses only by adjusting its output.
e. If a perfectly competitive firm is producing output less than its profit-maximizing output, marginal revenue is greater than marginal cost.