Rationalize the ranking of the following ethers according to their ability to form explosive peroxides.

• A. Ether (a) has the most hindered oxygen
  Ether(b) has a less hindered oxygen
  Ether (c) has the least hindered oxygen
  Ether (d) lacks any hydrogen at the α-carbons
• B. Ether (a) forms the most stable radical
  Ether(b) forms a less stable radical
  Ether (c) forms the least stable radical
  The lone pairs of oxygen in ether (d) are in conjugation with the phenyl groups
• C. Ether (a) forms the most stable radical
  Ether(b) forms a less stable radical
  Ether (c) forms the least stable radical
  Ether (d) lacks any hydrogen at the α-carbons
• D. None of these

Answer: (C)