What does it mean when a wind generator has a cut-in speed of 3 meters per second?

W) It won't produce any power unless the wind speed is lower than 3 meters per second

X) It will stop producing power at 3 meters per second to protect itself from breaking

Y) It will produce the maximum power at 3 meters per second

Z) It won't produce any power unless the wind speed is higher than 3 meters per second
Z) IT WON't PRODUCE ANY POWER UNLESS THE WIND SPEED IS HIGHER THAN 3 METERS PER SECOND