You rub a rubber rod and rabbit fur together. Afterwards, you find that the rubber rod has a charge of -5.6 C. Which of the following is true?
A. Protons were transferred from the rubber rod to the rabbit fur.
B. Electrons were transferred from the rubber rod to the rabbit fur.
C. Electrons were transferred from the rabbit fur to the rubber rod.
D. Protons were transferred from the rabbit fur to the rubber rod.
How many charged particles (electrons or protons) were transferred?