Given that the function f (x) = 4x2-mx + 5 is an increasing function in the interval [- 2, + ∞), then the value range of M is () A. (-∞,-16)B. (-∞,16]C. (-∞,-16]D. (4,16)

Given that the function f (x) = 4x2-mx + 5 is an increasing function in the interval [- 2, + ∞), then the value range of M is () A. (-∞,-16)B. (-∞,16]C. (-∞,-16]D. (4,16)

The axis of symmetry of the function f (x) = 4x2 MX + 5 is x = M8, and the function f (x) = 4x2 MX + 5 is an increasing function in the interval [- 2, + ∞), ∵ M8 ≤ - 2, ∵ m ≤ - 16