f(xo +h)-f(xo) A continuous curve y = f(x) has a vertical tangent at x = x₁ if lim h h→0 at the origin? Give reasons for the answer. -4, x<0 f(x) = 0, x=0 2, x>0 Does the graph of the following function have a vertical tangent at the origin? O A. No, because the function is not continuous at x = 0. f(xo +h)-f(xo) O B. Yes, because the function is continuous and the limit lim h h→0 =[infinity] or -[infinity]. Does the graph of the following function have a vertical tangent = [infinity]o at x = 0.