Which contains both saturated and unsaturated bonds?

1. Methane and ethane have only C-C single bonds (saturated). 2. Ethyne has a single C-H bond and one C-C triple bond. 3. Benzene is a six-membered carbon ring with alternating single and double bonds. 4. So benzene contains both saturated (single) and unsaturated (double) bonds. 5. Modern theory describes benzene as having delocalised electrons, but the conventional answer is that it has both bond types. _Source: syllabus Science Ch 4 'Carbon and its Compounds' (byjus.com extract)_