PLEASE HELP ME ASAP!!!!!!
Quincy is monitoring the movement of a particle along the x-axis of an x-y plane. The velocity is negative, and the acceleration is positive. Which of the following describes what Quincy observes?

a. The particle is moving in a negative direction, and its speed is increasing.
b. The particle is moving in a positive direction, and its speed is increasing.
c. The particle is moving in a positive direction, and its speed is decreasing.
d. The particle is moving in a negative direction, and its speed is decreasing.