identify an equation that models the situation and find it's soloution

it's going to be lee's birthday soon, and her friends laylah, annie, may, and cella have contributed equal amounts of money to but her a present. they only have $45.00 to spend between them. determine how much each contributed

A] 5y = 45.00; y = $9.00

B] 5y = 45.00; y = $10.00

C] 5 + y = 45.00; y = 39.00

D] 5 + y = 45.00; y = $40.00