Saskatchewan Polytechnic$5.$ Sean earned $$9,000$ from his co$-$op work term and plans to invest it for a $5-$year period.Determine the difference in interest between the two options below and specify which oneSean should choose to earn the best return: $(5$ marks$)$a$.$ Invest it at $4\mathrm{.}6\%$ simple interest, paid monthly or$,$b$.4\mathrm{.}1\%$ interest compounded annually