Answer:
(C) 0.3 %
Explanation:
APR (Annual percentage rate) for first 3 months = 3.6%
APR for remaining 9 months = 14.4%
Formula for periodic interest rate = APR/n
where APR is the annual percentage rate and
n = no. of times the payment is to be made in a year
For calculating periodic interest rate for first 3 months, APR = 3.6%
n = 12 ( Since the interest is compounded monthly)
Periodic interest rate = 3.6/12
= 0.3%
Hence (C) is the correct answer.