Which of the following is not true about combustion of hydrocarbons?

• A. All hydrocarbons react in air to form carbon monoxide and then carbon dioxide
• B. First step is always the reaction between the hydrocarbon and hydroxyl radical
• C. Alkanes, the hydroxyl radical abstracts a hydrogen atom and forms a carbanion
• D. With alkenes and alkynes, the electron-deficient hydroxyl radical adds to the multiple bond