Consider the following statemens.
1. Endoplasmic Reticulum (ER) is called as 'skeleton of cell'.
2. ER is divided into three types according to presence or absence of ribosome
3. Smooth ER is rich in actively protein secreting cells.
Which of the statemen(s) given above is/are correct?

A. Only 1

B. 1 and 2

C. 2 and 3

D. Only 3

Answer: Option A