An FI offers a $$2500$ minimum balance investment savings account paying $4$ per cent annual interest, and there are no service charges as long as the customer maintains the minimum balance. The customer maintains a balance of $$5000,$ and averages $750$ cheques per year. Each cheque has a processing cost to the FI of $$0\mathrm{.}15.$ What is the annual gross interest return on this account to the customer?A$.$ $$112\mathrm{.}50$B$.$ $$100\mathrm{.}00$C$.$ $$312\mathrm{.}50$D$.$ $$212\mathrm{.}50$