Cameron invested $1,800 at the beginning of every 6 months in an RRSP for 11 years. For the first 5 years it earned interest at a rate of 3.10% compounded semi-annually and for the next 6 years it earned interest at a rate of 5.30% compounded semi-annually. Calculate the accumulated value of his investment at the end of the first 5 years. a. $19,608,11 b. $17,608.11. C. $18,608.11