Which one of the following formulas is used to calculate probable error of correlation coefficient between two variables of $$'n'$$ pairs of observations?

A. $$0.6745\left[ {\frac{{1 - {r^2}}}{{\sqrt n }}} \right]$$

B. $$0.5758\left[ {\frac{{1 - {r^2}}}{{\sqrt n }}} \right]$$

C. $$0.675\left[ {\frac{{1 - {r^2}}}{n}} \right]$$

D. $$0.5758\left[ {\frac{{1 - {r^2}}}{n}} \right]$$

Answer: Option A