Which suffix pair names single- then double-bond hydrocarbons?

1. The question asks for the suffixes used for two simple hydrocarbon families, in the stated order: single bonds first, then a double bond. 2. The suffix -ane identifies an alkane, whose carbon-carbon bonds are all single. The suffix -ene identifies an alkene with a carbon-carbon double bond. 3. Therefore the required pair is -ane; -ene, which is option A. The suffix -yne would identify a carbon-carbon triple bond.