Which of the Following Statements About Alkanes Is True?
A) $\pi$

Which of the following statements about alkanes is true?

A) Alkanes are aliphatic hydrocarbons having only C-C and C-H $\pi$ bonds.
B) Cyclic alkanes have two fewer H atoms than acyclic alkanes with the same number of carbons.
C) Acyclic alkanes contain carbons joined in one or more rings.
D) Acyclic alkanes have general molecular formula C_nH_2n.