You win a contest for which you get to pick your prize. Your options are:

a. $1,000 in the first month, $2,000 in the second month, $3,000 in the third month and so on for one year;

b. $5,000 per month for one year;

c. $12,000 in the first month, $11,000 in the second month, $10,000 in the third month and so on for one year.