Answer:
Option A
Step-by-step explanation:
A relation can be defined as a function if there is only one output for each input.
In this case, the output is the cost of the fabric and the input is the number of yards of fabric.
Then, for each number of yards of fabric there will be a cost. But there will not be two different costs (outputs) for the same number of fabric yards (entrance)
Then the answer is the Option A: Yes, because one imput (number of yards of fabric) will always have the same output (costs)
