Which of the following components are present in the cell wall of algae?
$(1)$ Cellulose $(2)$ Protein $(3)$ Galactans $(4)$ Mannans $(5)$ Suberin
$(6)$ Pectin $(7)$ Hemicellulose $(8)$ Calcium carbonate

• A
  $1, 2, 6, 7$
• B
  $3, 4, 6, 7$
• C
  $7, 8, 2, 1$
• D
  $1, 3, 4, 8$