A wooden metre stick is carefully balanced with its centre on the corner of a table. When a negatively charged plastic rod is brought near one side of the metre stick, the stick shows a slight attraction to the rod. (7.1)K/UC(a)Explain why there is a slight attraction between the neutral metre stick and the negatively charged plastic rod.(b)Predict what would happen if the negatively charged rod were brought near the other end of the metre stick.(c)Predict what would happen if the plastic rod were positively charged.