Which situation can be represented by the equation y = 25x + 50?
A. A repairman charges $25 to come to the house and $50 for each hour he works.
B. Tom pays $25 a month for a health club membership. He also had to pay a $50 registration fee.
C. Sally has $25 in her savings account. She plans on depositing $50 from each of her paychecks into her account.
D. A school store started the year with 25 pencils. Each month they added 50 more to their inventory.