In photosynthesis, which substances are used up, which are produced, and which are necessary but remain unchanged after the reaction? Identify the correct row from the table below:

Option	Used up	Produced	Remain unchanged
$(a)$	$CO_2, H_2O$	$Glucose, O_2$	$Chlorophyll$
$(b)$	$Chlorophyll$	$CO_2, H_2O$	$Glucose$
$(c)$	$O_2, Glucose$	$Starch$	$Cellulose$
$(d)$	$H_2O, O_2$	$Glucose$	$Chlorophyll$

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