All living things contain carbon. which of the following statements are true about carbon atoms? i. carbon atoms can form single, double or even triple bonds with other carbon atoms. ii. carbon atoms can join together to form chains or rings. iii. carbon can bond with many elements, including hydrogen, oxygen, phosphorus, sulfur and nitrogen.

Ai and ii only

Bi and iii only

Ci, ii and iii

Dnone of the above