How many crates of dog food averaging 15 pounds a crate can be loaded onto a truck that can hold a maximum of 3,500 pounds of storage? If c represents the number of crates, how would you write in inequalities expressing this situation?

3,500c greater than or equal to 15

15c greater than or equal to 3500

3500c less than or equal to 15

15c less than or equal to 3500