The pattern formation of certain tissues ( $\mathbf{P}, \mathbf{Q}$ and $\mathbf{R}$ ) in a thickening dicot stem is depicted in the figure.
If a transverse section of such a stem was stained with phloroglucinol (that specifically stains lignified tissue), then the tissue/s that would be stained is/are:

• Correct answer
  A

  Q only
• B

  P and Q only
• C

  P only
• D

  Q and R only

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