Simple Electrics

[Physics Pop Quiz No.2580551]

(Step 1) Two electrically neutral aluminum spehres, A and B, make electrical contact with one another but are electrically isolated from everything else.
(Step 2) A negatively charged plastic rod is brought near A, while A and B are still in contact.
(Step 3) A and B are pulled apart using insulating threads, while the charged rod is still near.
(Step 4) The plastic rod is removed. In the laste state; i.e., state (4):

a. A's charge will be - , B's will be +
b. A's charge will be +, B's will be -
c. Both A's and B's charge will be positive.
d. Both A's and B's charge will be negative.
e. Both A and B will be neutral.