Context: Emilia has a garden that is sometimes visited by deer. She notices that the deer eat some plants in her garden more than others. She wonders what factors affect which plants the deer eat. So, she decides to design an experiment. She has the following supplies available:
a garlic spray used to keep garden pests away
four tomato plants
four bean plants
Using only these supplies, which question can Emilia investigate with an experiment?
A. Do the deer eat fewer leaves from bean plants sprayed with garlic spray than from unsprayed bean plants?
B. Do the deer eat fewer leaves from bean plants sprayed with coffee spray than from unsprayed bean plants?
C. Do the deer eat more leaves from tomato plants or from squash plants?
From the given choices, choose the correct answer and respond with the letter of that choice.

A