Which one of the following cellular parts is correctly matched with their characters ?

A. Centrioles Sites for active RNA synthesis.

B. Lysosomes Optimally active at a pH of about 8.5.

C. Thylakoids Flattened membranous sacs forming the grana of chloroplasts.

D. Ribosomes Those on chloroplasts are larger (80S) while those in the cytoplasm are smaller (70S).

Please do not use chat terms. Example: avoid using "grt" instead of "great".