In chloroplasts, the chlorophyll is located in

A

Stroma

B

Grana

C

Pyrenoid

D

Both A and B

ANSWER
The chloroplast is a plastid which contains chlorophyll (green pigment) within the thylakoid membranes of the organelle.
Thylakoid can be defined as a membrane-bound compartment within the chloroplasts of a plant cell.
It is the site of the light-dependent reactions of photosynthesis. 
Thylakoid consists of a thylakoid membrane which encloses the thylakoid lumen.
A stack of thylakoid discs or lamella is known as grana.
So, the correct answer is 'Grana'.