Tracey and Mark recorded the number of customers waiting in the first 5 checkout lines at two different grocery stores at the same time of day on the same day of the week. Tracey found {2, 2, 3, 3, and 4} waiting customers in store A. In store B, Mark found {3, 4, 4, 4, and 5} waiting customers. Which one of the following statements is true? Store A has a spread of 2.8.

Store A has a spread of 2.8.

Stores A and B have an equal spread.

Stores A and B have an equal spread.

Store B has a greater spread than store A.

Store B has a greater spread than store A.

Store B has a spread of 4.