correct answer is: b) ₹300 & ₹9600

Explanation
Here,
P =\ ₹9600
R =\ 7\frac{1}{2} % or \frac{15}{2} %
T = 5 months or \frac{5}{12} years
We know, SI =\frac{P\times R\times T}{100}
\therefore S.I. =₹\left(\frac{9600\times15\times5}{2\times12\times100}\right)
\rightarrow SI =\ ₹300
\therefore Simple interest = ₹300
We also know,
Amount\ = (Principal\ +\ Simple\ Interest)
\therefore Amount =₹9600+300
\rightarrow Amount =₹9900
Ans: S.I. = ₹300 and Amount = ₹9600.