The reddish brown precipitate formed in the Fehling's test for aldehydes (RCHO) is due to the formation of

• A

  $\mathrm{Cu}$
• Correct answer
  B

  $\mathrm{Cu}_{2} \mathrm{O}$
• C

  CuO
• D

  $(\mathrm{RCOO})_{2} \mathrm{Cu}$

Hence, the correct answer is option: 'B'.