I have been offered a job by a startup that recently raised a decent amount of money. Let’s assume I have been offered 10k stock options worth $x with a cliff period of n years and vesting period of m years. I can exercise my options upto y years after I leave the startup.1. How is it decided that 10k stock options are worth $x?2. Since it’s a start up the stock options are essentially of no value, correct? I don’t understand how these options have any value atm.3. What does it mean when they say I can exercise the options upto y years after leaving the company?