`Aa n dB` play a game of tennis. The situation of the game is as follows: if one scores two consecutive points after a deuce, he wins; if loss of a point is followed by win of a point, it is deuce. The chance of a server to win a point is 2/3. The game is a deuce and `A` is serving. Probability that `A` will win the match is (serves are change after each game) `3//5` b. `2//5` c. `1//2` d. `4//5`