Question $3$

You are writing a query that will give you the total cost to the Pet Rescue organization of rescuing animals. The cost of each rescue is stored in the Cost column. You want the result column to be called $$Total$\_$Cost$.$ Which of the following SQL queries is correct?

SELECT SUM$($Cost$)$ FROM PetRescue

SELECT SUM$($Cost$)$ AS Total$\_$Cost FROM PetRescue

SELECT SUM$($Total$\_$Cost$)$ From PetRescue

SELECT Total$\_$Cost FROM PetRescue