According to the Huff Gravity Model,the Two Factors Which Attract

According to the Huff Gravity Model,the two factors which attract consumers to a store location are:

A) travel time for customer to get to location and the number of customers in a trade area.
B) the attractiveness of the store's location and the time it takes to travel to the store.
C) the size of the store and the number of customers in a trade area.
D) travel time for customer to get to location and the distance between a customer's location and store location.
E) the distance between customer location and store location and the number of customers in a trade area.