With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: Various procedures are used if a tie occurs. In tournament play, as well as in the NHL playoffs, North Americans favour "sudden death overtime", in which the teams continue to play twenty-minute periods until a goal is scored. Up until the 1999–2000 season, regular-season NHL games were settled with a single five-minute sudden death period with five players (plus a goalie) per side, with both teams awarded one point in the standings in the event of a tie. With a goal, the winning team would be awarded two points and the losing team is also awarded some points (just as if they had lost in regulation). Counting all time from when the puck first drops, a typical 60-minute game takes around 2 hours and 20 minutes to complete.
text_B: If a team in the NHL has zero points in the standings at the end of a season, did they have a perfect season?
NO.