Answer:
C
Explanation:
Let's view this in a time series.
Time : 0 to end of first year
The first year you save up to $4,200 and you deposit that money in an account.
Time: Beginning of the second year to end of the second year.
Your money now has paid a 5.2% interest. That means you have in your banking account now $4,200*1.052 = $4,418.4
Now you deposit another $4,200.
Total amount at the end of second year: $ 8,618.4
Time: Beginning of the third year to three years from now.
Your money now has paid a 5.2% interest on your total amount in the bank.
That means $8,618.4*1.052 = $ 9,066.55
Now you make your third deposit. Another $4,200
Total amount : $13,266.55 (closest integer $ 13,267)
