You are planning to save for retirement over the next 40 years. To do this, you will invest $500 a month in an investment account. The annual return on the account is expected to be 7.5 percent. How much will you have in the account at retirement in 40 years? Select one: a $1,023,113 b. $1,363,539 O c. $1,511,911 od. $1,394,069 e. $892,904