Assuming payments are made at the end of each year, what is the annual payment required to retire a $50,000 loan with a term of 5 years and an interest rate of 10%; how much of this payment represents interest at the end of year 1?
a: $8,189.87; $5,000
b: $13,189.87; $5,000
c; $13,189.87; $8,189.87
d: $13,189.87; $13,189.87
e: $5,000; $5,000