can someone please give me the answer i'll give a medal.

One form of electric current is called alternating current. Which best describes alternating current?
A. Happening or existing now: belonging to or existing in the present time
B. Happening or existing in the future: ever changing
C. The overall electric charge moves in one direction as it moves down a wire.
D. The overall electric charge in a wire moves back and forth over time.

Question

can someone please give me the answer i'll give a medal.

One form of electric current is called alternating current. Which best describes alternating current? 
    A.   Happening or existing now: belonging to or existing in the present time
    B.   Happening or existing in the future: ever changing
      C. The overall electric charge moves in one direction as it moves down a wire.
    D.  The overall electric charge in a wire moves back and forth over time.

anonymous · Answer

Anyone knows the answer?