Which statement describes the bond joining carbon and hydrogen in an ethene molecule?
- AA $\pi$ bond between an $s$ orbital and an $sp^2$ orbital
- BA $\pi$ bond between an $s$ orbital and an $sp^3$ orbital
- CA $\sigma$ bond between an $s$ orbital and an $sp^2$ orbital
- DA $\sigma$ bond between an $s$ orbital and an $sp^3$ orbital