BC issued a loan of $93.000 at 4.69% compounded semi-annually. The loan was paid by payments of $3,460 at the end of every quarter. a. How many payments were required to pay off the loan? (Enter a whole number) b. What was the total principal repald in the 6 th year? (Enter starting and ending periods as P1 and P2 and the total principal repaid as a positive value to the nearest cent.) P1=P2= Total principal repaid in the 6 th year =$ c. What was the size of the final payment? (Enter a positive value to the nearest cent)