If the system of equations $2 x+p y+6 z=8, x+2 y+q z=5$ and $x+y+3 z=4$ has infinitely many solutions, then $\mathrm{p}=$

• A

  $-1$
• Correct answer
  B

  $2$
• C

  $3$
• D

  $-3$

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