加拿大毕业工签Post-graduation Work Permit的时长问题

求助地里，三学期12个月（中间四个月coop实习一学期）的项目究竟给几年工签？？

问了很多人，都告诉我是看签证官心情，有给一年的，有给三年的，大部分给三年。

但是工签的官网上明确地写了：
canada.ca

How long the post-graduation work permit is valid for depends on the length of your study program. If your program was:

-less than 8 months
you aren’t eligible for a PGWP
-more than 8 months but less than 2 years
your PGWP may be valid for up to the same length as your study program (for example, if you completed a 9-month program, a work permit may be issued for up to 9 months)
-2 years or more
a PGWP may be issued for 3 years

所以是玩文字游戏吗？这个"may"背后意味着一切皆有可能？

我还发邮件去问了项目的administrator，她告诉我"the majority of our students are visa students and have not had any issues with them continuing to work in Canada."

So I'm totally confused.......