determine if 2.5/10=?12/48 or 2.52/2=?12/24 is a proportion.

A. Neither is a proportion
B. 2.5/2= 12/24
C. Both are proportions
D. 2.5/10= 12/48

D. 2.5/10= 12/48

This proportion is correct since when cross multiplied, both sides equal 1.