How many plants given below have C₃ as well as C₄ pathways and mechanism that increase the concentration of ${\mathrm{CO}}_2$at the enzyme site during photosynthesis ?

Wheat, maize, rice, potato, sugarcane, tomato, pearl millet, bell pepper, sorghum.

• A

  Three 

• B

  Four 

• C

  Six

• D

  Five