Is f(x) = x²-4x+3 x-1 differentiable at x = 1? Justify your answer. Choose the correct answer below. OA. Yes, the function is differentiable because f(x) is not continuous at x = 1. OB. No, the function is not differentiable because f'(x) = 0 at x = 1. OC. Yes, the function is differentiable because f(x) is continuous at x = 1. OD. No, the function is not differentiable because f(x) is not continuous at x = 1.