If Signed Papers As A Director &my Boss Is Saying It Was A Mistake &its Suppose To Be Associate,wht Can I Do?

i dont want to sign, is this legal? HR’s “mistake.” The only reason im annoyed is also bc i should be a director (based on qualification, experience, etc). can i take legal action for them demoting me for no reason? should i resign?

Suppose You Are A Risk-neutral Manager Attempting Hire A New Sales Manager. ?

All of the workers in the market have the same ability to manage and sell, but differ with respect to the wage at which they are willing to work for your company. The market for sales managers is composed of three types of individuals: 85 percent are willing to work for $75,000 and 15 percent are willing to work for $85,000. If the first interviewee is only will to work for $85,000. If the human resource director spends five hours interviewing each candidate and the opportunity cost of this director’s time is $500, then the director should
A. Search again since the expected benefit of an additional search exceeds the cost
B. Stop searching since the expected benefit of an additional search is less than the cost
C. Search again since the expected benefit of an additional search is less than the cost
D. Stop searching since the expected benefit of an additional search exceeds the cost