Stock for the Jones Corporation starts with a value of $39.63 and gains $0.30 in value per month. Stock for the Overton Company starts with a value of $24.45 and gains $0.80 in value per month. When are the two stocks nearly equal in value?

A after 3 monthsafter 3 months

B after 4 monthsafter 4 months

C after 15 monthsafter 15 months

D after 30 months