Use Lagrange multipliers to find the points on the given cone that are closest to the following point. z² = x² + y²; (14, 4, 0) (x, y, z) = (smaller z-value) (x, y, z) = (larger z-value)

A) (0, 0, 0); (14, 4, 0)
B) (14, 4, 0); (0, 0, 0)
C) (7, 2, 0); (21, 6, 0)
D) (21, 6, 0); (7, 2, 0)