Which Equation Is the Correct Equation for Determining the Initial $\frac { \text{Final Sample Size \(\times\) Incidence Rate } } { \text{Completion Rate}}$

Multiple Choice

Which equation is the correct equation for determining the initial sample size?

A) $\frac { \text{Final Sample Size \(\times\) Incidence Rate } } { \text{Completion Rate}}$
B) $\frac { \text{Final Sample Size \(\times\) Completion Rate } } { \text{Incidence Rate}}$
C) $\frac { \text{Completion Rate } } { \text{Incidence Rate × Final Sample Size}}$
D) $\frac { \text{Final Sample Size } } { \text{Incidence Rate \(\times\) Completion Rate}}$