Which of the following statements is wrong about alkanes ?

(A) They are all saturated hydrocarbons.
(B) They can undergo addition as well as substitution reactions.
(C) They are almost non polar in nature.
(D) On complete combustion give out carbon dioxide and water.

They can undergo addition as well as substitution reactions.

Reason — The non availability of electrons in the single covalent bond makes them less reactive and therefore they undergo characteristic substitution reactions only.