If y = 30p, and p is prime, what is the greatest common factor of y and 10p, in terms of p?  Choose the correct option:
A) 10p	B) 2p	C) 5p	D) 7p	E) p^2
Y=30p   other number is 10p   then GCF(30p,10P)=10P; 10p is the correct answer
<result>A</result>
If y = 30p, and p is prime, what is the greatest common factor of y and 10p, in terms of p?