If ‘a’ is the annual payment, ‘n’ is the number of periods and ‘i’ is compound interest for Rs 1 then future amount of the annuity is:
(a) A = \(\frac{a}{i}\)(1 + i) [(1 + i)n – 1]
(b) A = \(\frac{a}{i}\)[(1 + i)n – 1]
(c) P = \(\frac{a}{i}\)
(d) P = \(\frac{a}{i}\)(1 + i) [1 – (1 + i)-n]