(A) A sampling is called unbiased sampling if each element of population has an equal chance of being chosen.

(B) A parameter is used to describe sample of a population.

(C) Sample proportion $(p)=\frac{x}{n}$

(D) The measurable characteristic of population is called statistic.

(E) There are mainly two types of statistical inferences named by point estimation and hypothesis testing.

Choose the correct answer from the options given below :

(A) and (C) only