In a line transect of length L and half-width w, designed for estimating the density of gaur (∼ D=N/2Lw), N animals were counted.

The following statements represent possible assumptions about population sampling.

A. The probability of detection is independent of distance from the transect line.

B. The animals in question are uniformly distributed through the study area.

C. The animals are deemed to be stationary and thus detected only once during the sampling.

D. Animals on the line will be detected with a probability equal to 1.

Select the options that are considered as assumptions in line transect sampling.