Correct option (A) 13%
Explanation:
P + SI for 3.5 yrs = Rs. 873
P + SI for 2 yrs = Rs 756
On subtracting, SI for 1.5 yrs = Rs. 117
Therefore, SI for 2 yrs = (Rs 117/1.5 x 2) = Rs.156
P = 756 – 156 = Rs, 600
and rate = (100 x 156/600 x 2) = 13% per annum