If $\tan A=3 / 4$ and $\tan B=-12 / 5$, then how many values can $\cot (\mathrm{A}-\mathrm{B})$ have depending on the actual values of A and B ?

• A

  1
• Correct answer
  B

  2
• C

  3
• D

  4

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