Identify the correct reagents that would bring about the following transformation:

- A(i) , (ii) , (iii)
- B(i) , (ii) , (iii) alk. , (iv)
- C(i) , (ii)
- D(i) , (ii)
Solution & Step-by-step Explanation
The transformation requires converting a terminal alkene to a terminal aldehyde with the same carbon count.Hydroboration-Oxidation: followed by converts the alkene to a primary alcohol () following anti-Markovnikov rule.Selective Oxidation: (Pyridinium Chlorochromate) oxidizes the primary alcohol to an aldehyde ().Using would give a secondary alcohol (Markovnikov). would over-oxidize the alcohol to a carboxylic acid.