Read the components $a$ to $d$ given in the note and identify the correct sequence of components from the outside to the inside of a mature stem:
$(a)$ Secondary cortex
$(b)$ Wood (Secondary xylem)
$(c)$ Secondary phloem
$(d)$ Phellem (Cork)

  • A
    $(d), (a), (c), (b)$
  • B
    $(c), (d), (b), (a)$
  • C
    $(a), (b), (d), (c)$
  • D
    $(d), (c), (a), (b)$

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