Answer : Option D

Explanation :

$MF#%\text{Principal, P} = \dfrac{100 \times \text{SI}}{\text{RT}} = \dfrac{100 \times 80}{20 \times 2} = \text{Rs. 200}$MF#%
Amount after 2 year on Rs.200 at 20% per annum when interest is compounded annually
$MF#%= \text{P}\left(1 + \dfrac{\text{R}}{100}\right)^\text{T} = 200\left(1 + \dfrac{20}{100}\right)^2 = 200\left(\dfrac{120}{100}\right)^2 = \dfrac{200 \times 120 \times 120}{100 \times 100}\\\\ = \dfrac{2 \times 120 \times 120}{100}= 2 \times 12 \times 12 = \text{Rs. 288}$MF#%
Compound Interest = 288 - 200 = Rs.88