Will give brainliest to correct answer

Marie rubs a balloon against a small piece of wool for about 30 seconds, causing negative charges on the wool to transfer to the balloon. She then places the piece of wool against the balloon. Which of the following best describes what will happen next?
A.
The positively-charged wool will stick to the negatively-charged balloon.
B.
The negatively-charged wool will repel the positively-charged balloon.
C.
The positively-charged wool will repel the negatively-charged balloon.
D.
The negatively-charged wool will stick to the negatively-charged balloon.

Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".