Suppose a Fellow Consultant Claims That Regional Markets with More

Suppose a fellow consultant claims that regional markets with more grocery stores per capita will be more competitive. If you assume this claim to be true, what is an empirically testable conclusion that would follow from this assumption?

A) Grocery store sales will be higher in locations with more grocery stores per capita.
B) Grocery store costs of goods will be higher in locations with more grocery stores per capita.
C) Grocery store sales will be lower in locations with more grocery stores per capita.
D) Grocery store prices will be higher in locations with more grocery stores per capita.