Refer to the Venn Diagram Below

Refer to the Venn diagram below. A student is preparing this diagram as a way to compare CAM plants and C₄ plants.Which statement should be placed in the center of the diagram where the two circles overlap?

A) Initial fixation of carbon and Calvin cycle reactions occur at the same time.
B) Initial fixation of carbon does not involve rubisco.
C) PEP carboxylase is only active at night.
D) Malate, the product of initial carbon fixation, is temporarily stored in a vacuole.
E) Examples include succulents and cacti.