Read the points given below and identify the cell organelle.
(a) The organelle remains continuous with the outer membrane of the nucleus. 
(b) It bears two types of glycoproteins, ribophorin I and ribophorin II on the surface.
(c) This organelle is involved in protein synthesis.

• A

  Golgi body

• B

  Vacuole

• C

  Smooth endoplasmic reticulum

• D

  Rough endoplasmic reticulum.