Identify the two statements by which the principal sum can be calculated?
P : The sum amounts to Rs. 690 in 3 yrs at Simple Interest.
Q : The sum amounts to Rs. 750 in 5 yrs at Simple interest.
R : The rate of interest is 5% per annum.
A P & Q will give the answer
B R & Q will give the answer
C P & R will give the answer
D Any two will give the answer