The correct option is B AC
Given, ∠B = 90∘
i.e., ∠A + ∠C = 90∘ (angle sum property of a triangle)
Now, for any value of ∠A and ∠C, both would still be smaller than ∠B.
Therefore, ∠B is the largest angle of the three. The side opposite to the largest angle will be the largest, i.e. AC.