UPSC CAPF AC 2016 Paper

There are two boxes. Box I contains one white card and two black cards and box II contains one white card and a black card. Twro persons P and Q play a game. P picks a card randomly from box I. If P finds the white card, P wins and the game stops. If P finds the black card, Q draws a card randomly from box II. If Q finds the white card Q wins. The game stops whether Q draws the white card or the black card. Which one of the following is correct?