तीसरा केंद्रीय आघूर्ण (third central moment) किसी प्रायिकता वितरण के किस गुण को मापता है?

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: In the statistical analysis of frequency distributions, the second central moment (μ2) is mathematically equivalent to the standard deviation (σ). Reason R: Central moments are defined as the arithmetic mean of the various powers of deviations of items in a distribution from its actual arithmetic mean. In the light of the above statements, choose the most appropriate answer from the options given below: