Use the information given to answer the question.
A parking meter only accepts dimes and quarters. A parking meter attendant empties the machine to find $1.75.
Part A
If X represents the number of dimes, and y represents the number of quarters,what are the possible values of x, the domain of the function?

all positive integers
all real numbers
(0,5,10,15)
(0,5,10,15,20,25)