Determine whether the function defined is one-to-one.
f(x)=√19-x²
Is the function one-to-one? Select the correct choice below
A. No, because the two x-values 2 and -2 correspond to same f(x) value
(Type an exact answer, using radicals as needed.)
B. Yes, because each x-value corresponds to only one y-value, and each y-value corresponds to only one x-value.