Phloem delivers the sugar made during photosynthesis to various parts of a plant. Some food energy is converted into ATP for uses during plant activities such as the opening and closing of stomata in response to gas. Which two plant systems are interacting in this scenario?

A) Transport in vascular tissue and gas exchange in dermal tissue

B) No plant systems are interacting, plant systems work independent of each other

C) Reproductive in the flowers and response in dermal tissue

D) Gas exchange in the root system and transport in the vascular tissue