giving all my points! please help

at 18 years old, starting with $0, you begin saving $100 per month, with a 10% annual return. if you wait to start saving the same amount until you are 22, (after graduating college), how much less do you have at age 65?

a) $0-$99,999
b) $100,000-$199,999
c) $200,000-$299,999
d) $300,000 or more