Answer:
A
Step-by-step explanation:
I hope this was helpful, if you want the work then let me know.
B
1^2 + 8^2 = c^2
1 + 64 = c^2
65 = c^2
√c^2 = √65
<em>2</em><em>y</em>
this is common factor of both the terms
because 2y divides both term
hope it helps