Which of the Following Statements Is True Regarding the Mark-And-Recapture

Which of the following statements is true regarding the mark-and-recapture method?

A) It assumes that the size of the population of interest remains constant between the initial mark and subsequent recapture measurements.
B) It can be represented by the equation: N = C/R × M.
C) It can rely on members of a species being identified by physical characteristics (i.e., fin markings on whales) .
D) It is used to estimate the size of a population of interest.
E) All of these choices are correct.