Please help me!!

Select the correct answer.
Clarissa's sister makes weekly installment payments for a motorized scooter she purchased from a friend. She purchased the motorized scooter for $600 and is paying $18.75 a week to her friend until it is paid off.
Clarissa's sister wants to know when she has $150 left to pay for the motorized scooter.
Select the equation and solution for the number of months, x, it takes her to have $150 left to pay.


A) -18.75x + 600 = 150
Clarissa's sister will have $150 left to pay after 24 weeks.

B) 18.75x − 600 = 150
Clarissa's sister will have $150 left to pay after 8 weeks.

C) -18.75x + 150 = 600
Clarissa's sister will have $150 left to pay after 24 weeks.

D) 18.75x − 150 = 600
Clarissa's sister will have $150 left to pay after 8 weeks.