Please help Which of these situations give a description of an experiment being performed? Choose all that se correct.

A) A randomly selected group of dogs from a shelter are given obedience training when they are adopted, then the rate at which the dogs are returned to the shelter is compared to dogs that did not get the training

B)When people bring their cat to a vet complaining of fleas, the vet flips a coin, and gives the cats that get heads one kind of flea treatment and the cats that get tails another kind of flea treatment. Two weeks later, the vet calls the owner and finds out if the cat still has fleas.

C)A vet looks at the teeth of all the cats that come to her office, and evaluates their dental health on a 5-point scale. Then she asks if they eat wet food or dry food, and collects
data to see if there is a correlation

D)For a week, every tenth person to enter a pet store is asked how many cats and how many dogs they own

E)Employees record the amount of food eaten each day by each dog at a shelter. Then they find the average daily intake for each breed of dog