Compute the derivative of the given function and find the slope of the line that is tangent to its graph for the specified value of the independent variable.
g(t) = 4/t; t = -1/4

O g'(t) = - 4/t²; m = 64
O g'(t) = 4/t²; m = -64
O g'(t) = - 1/t²; m = -16
O g'(t) = 1/t²; m = 16