Task: Question Answering
Input (English): Question: What is the principal sum?
I. The sum amounts to Rs. 690 at S.I.
II. Total year is 8 years.
III. The rate of interest is 5% p.a.

 Option A: I and III only

 Option B: II and III only

 Option C: I and II only

 Option D: Any two of the three

 Option E: All I, II and III
Output (English): Option E