The graph shows how the displacement \(d\) of an object varies with time \(t\). The tangent to the curve at time \({t_1}\) is also shown.

Which of the following gives the speed of the object at point P?

A.     the gradient at P

B.     the shaded area

C.     \(\frac{1}{{{\text{gradient at P}}}}\)

D.     \(\frac{{{d_1}}}{{{t_1}}}\)

A