A type of fabric cost $2.49 per yard. In a relation, the input is the number of yards of fabric and the output is the cost.
Is this relation a function? Why or why not?
A. No, because different inputs (numbers of yards of fabric) will have different outputs (costs).
B. No, because the fabric always costs $2.49 per yard.
C. Yes, because fabric can cost different amounts.
D. Yes, because one input (number of yards of fabric) will always have the same output (cost)