How many platforms are available for the game Pro Evolution Soccer 2016?
game Pro Evolution Soccer 2016 refers to game_name = 'Pro Evolution Soccer 2016'
SELECT COUNT(T2.id) FROM game_platform AS T1 INNER JOIN platform AS T2 ON T1.platform_id = T2.id INNER JOIN game_publisher AS T3 ON T1.game_publisher_id = T3.id INNER JOIN game AS T4 ON T3.game_id = T4.id WHERE T4.game_name = 'Pro Evolution Soccer 2016'