A point mass oscillates along the $$x$$-axis according to the law $$x = x_0 \cos(\omega t - \pi/4)$$. If the acceleration of the particle is written as $$a = A \cos(\omega t + \delta)$$

A

$$A = x_0, \delta = -\pi/4$$

B

$$A = x_0 \omega^2, \delta = -\pi/4$$

C

$$A = x_0/\omega^2, \delta = -\pi/4$$

D

$$A = x_0 \omega^2, \delta = 3\pi/4$$