Which answer describes the simpler problems that could be used to solve this story problem?

emily paid a total of $109.95 for 4 pairs of sandals and a pair of boots. each pair of sandals cost the same amount. the pair of boots cost $29.99. how much did 1 pair of sandals cost?

a.
subtract the cost of the boots from the total cost. divide that answer by 4.

b.
add the cost of the sandals and the cost of the boots. divide the sum by 4.

c.
multiply the total cost by 4. subtract the cost of the boots.

d.
divide the total cost by 4. add the cost of the boots.