Read the following statements (A) (B) (C), and select the true statement(s) regarding minerals.
(A) Non-metallic minerals contain 50% metals.
(B) Limestone, mica, and gypsum are examples of such metals minerals.
(C) The mineral fuels like coal and petroleum are also non-metallic minerals.
1
Only A and B
2
Only B
3
Only C
4
All of these