Statements given below are related to analysis of variance. Identify the statements that are true.
Statement I The shape of 'F' distribution depends on the number of degrees of freedom in both the numerator and the denominator of the 'F' ratio.
Statement II In analysis of variance, sample sizes should be equal.
Statement III Analysis of variance may be used to test whether the means of more than two populations are equal.

A. Statements I, II and III are true

B. Statements I and III are true

C. Statements I and II are true

D. Statement III is true

Answer: Option B