Write SQL query to solve given problem: Who had the most assists of team Plymouth Whalers in the 1999-2000 season?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T1.PlayerName FROM PlayerInfo AS T1 INNER JOIN SeasonStatus AS T2 ON T1.ELITEID = T2.ELITEID WHERE T2.TEAM = 'Plymouth Whalers' AND T2.SEASON = '1999-2000' ORDER BY T2.A DESC LIMIT 1