Correct option is A
The correct answer is (a).
In tennis, when the score is tied at 40-40, it is called "deuce." After deuce, the player who wins the next point is said to have the "advantage." If the player with the advantage wins the next point, they win the game. If the player with the advantage loses the next point, the score returns to deuce.
When the receiver wins the next point after deuce, the score is "advantage out." This means that the receiver has the advantage and needs to win one more point to win the game. If the receiver loses the next point, the score will return to deuce.