For the following redox reaction, which element is oxidized and which element is reduced? How many electrons are involved with the balanced reaction? 2H₂O(g)→O₂(g)+2H₂(g)

A. O is oxidized and H is reduced, 2 electrons are involved with the balanced reaction.
B. O is oxidized and H is reduced, 4 electrons are involved with the balanced reaction.
C. O is reduced and H is oxidized, 2 electrons are involved with the balanced reaction.
D. O is reduced and H is oxidized, 4 electrons are involved with the balanced reaction.