I Spend $60 Per Month on Bus Fares to Work

Multiple Choice

I spend $60 per month on bus fares to work. One day I decide to buy a mountain bike for $1680 and to ride to work instead. Assuming I work 12 months in a year, and my MARR is 1% per month, compounded monthly, what is the discounted payback time for this investment?

A) two years five months
B) two years seven months
C) two years eight months
D) two years nine months
E) two years ten months