The correct option is C ₹ 40,440
Given, amount invested per month is ₹ 1000 i.e P = 1000
Number of month (n) = 36 and rate of interest (r) = 8
∵ Maturity value of Reccuring deposit = Total Sum deposited + Interest
Sum deposited = 1000×36=₹36000
Interest = P×n(n+1)2×112×r100
= 1000×36×372×112×8100
=12×37×10=₹4440
Amount after maturity = 36000+4440
=₹40,440