UGC NET Statistics Q13

Question

For different sets of datasets X and Y, correlation coefficient between X and Y, that is R and standard deviation of X and Y, that is, S(X) and S(Y) are given in A-D below. Estimate the covariance between X and Y for each dataset and arrange in ascending order.
A. R=0.5, S(X)=8, S(Y)= 10
B. R=4/7, S(X)= 7, S(Y)= 9
C. R=0.7, S(X)= 12, S(Y)= 5
D. R= 19/42, S(X)= 14, S(Y)= 6
Choose the correct answer from the options given below: