Which one of the following points lies on the plane $2 x$ $+3 y-6 z=21 ?$

• A

  $(3,2,2)$
• Correct answer
  B

  $(3,7,1)$
• C

  $(1,2,3)$
• D

  $(2,1,-1)$

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