Correct option is A
The correct statements are C and D.
About Elephant and its herd-
The elephant is the largest existing mammal on the earth.
The herd follows matriarchy, i.e., the oldest female elephant becomes the head of the herd.
There are 10 to 12 female elephants and young one in a herd.
It mainly consists of females and baby elephants.
There is no male elephant in the herd, they leave when they turn 14 or 15.
The herd sometimes is joined by the (bull) elephant depending on the climate and terrain.
Elephants do not rest very much; they sleep for only two to four hours in a day.
Elephants like to play with mud and water.
A three-month old baby elephant generally weighs about 200 kg.
An adult elephant can eat more than 100 kg of leaves and twigs in one day.