Consider the following statements about the ethnic composition of Sri Lanka:

A. Major social groups are the Sinhala- speaking (74%) and Tamil-speaking (18%)?

B. Among the Tamils, there are two sub-groups, Sri Lankan Tamils and Indian Tamils.

C. There are about 7% Christians, who are both Tamil and Sinhala.

D. Most of the Sinhala-speaking are Hindus or Muslims and most of the Tamil-speaking are Buddhists.

Which of the above statements are correct?

(a) A, B, C

(b) A, B, D

(c) B, C, D

(d) A, B, C, D