Anna buys trees from a nursery that cost $5.95 each. She has a maximum of $40 to spend on her tree purchases. The total cost, with respect to the number of trees purchased, can be modeled by a function. Select the statement that correctly describes the domain of the function.

HINT: The Domain is the number of tress she can buy with the maximum amount of money she has.

A. The domain is the set of all integers greater than or equal to 0 and less than or equal to 6.

B. The domain is the set of all integers greater than or equal to 0 and less than or equal to 6. ,

C. The domain is the set of all integers greater than or equal to 0 and less than or equal to 7.

D. The domain is the set of all real numbers greater than or equal to 0 and less than or equal to 35.7.