Which of the following set of statements is correct about droughts in India.

A. Ecological drought takes place when the productivity of natural ecosystem falls significantly as a consequence of distress induced environmental damage.

B. Hydrological drought persists after atleast three successive meteorological droughts.

C. Meteorological drought is a situation where there is a reduction in rainfall for a specific period below a specific amount.

D. Agricultural drought occurs when large scale collapse of access to food occurs which, without intervention can lead to mass starvation and even deaths.

Choose the correct answer from the options given below: