Sources of Data

Dear sir,
can I confirm with you the following sampling methods?

Which of the following explains the essence of quota sampling?

A) Each element of the population has an equal chance of being chosen
– It is random sampling right?

B) Every nth number of the population is selected
– It is systematic sampling, right?

C) Every element of one definale sub-section of the population is selected
Is it stratified sampling?

D) None of above