The number of amphoteric oxides from the following is $\mathrm{CO}_2, \mathrm{GeO}_2, \mathrm{SnO}_2, \mathrm{PbO}_2, \mathrm{CO}, \mathrm{GeO}, \mathrm{SnO}, \mathrm{PbO}$

• A

  $3$
• Correct answer
  B

  $4$
• C

  $6$
• D

  $5$

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