Pls i need the correct answer this js really important to me

Jasmine invested $1,500 at the beginning of every 6 months in an RRSP for 11 years. For the first 6 years it earned interest at a rate of 4.90% compounded semi-annually and for the next 5 years it earned interest at a rate of 6.80% compounded semiannually. a. Calculate the accumulated value of her investment at the end of the first 6 years. $47,049.87$47,645.41$20,634.94$21,140.50 b. Calculate the accumulated value of her investment at the end of 11 years. $47,049.87$47,645.41$39,252.02$21,140.50 c. Calculate the amount of interest earned from the investment. $14,645.41$14,049.87$11,533.89