On 1/1/2018, one of the depositors began depositing an amount of 300 dinars at the beginning of every two months for a period of one and a half years, and after depositing the seventh installment, he stopped depositing, if the annual simple interest rate was 8%, then the depositor's balance on 30.06.2019 Select one: O a. 2 862 O b. 2628 O c. 2 762 O d. 2 268 Interests of an invested amount of 15,000 at a nominal annual rate of 5% at the end of a period of 7 years, and the interests are added at the end of every 6 months once:- Select one: O a. 6 194.6 O b. 6 814.6 O c. 6 714.6 O d. 6 914.6