Why does the failure of workers and firms to accurately predict the price level result in an upward-sloping aggregate supply curve? a. because contracts between workers and firms make some wages and prices "sticky" b. because menu costs make some prices "sticky" c. because firms are often slow to adjust wages d. all of the above.

Dcalifornia they have the most people with 200+ people per square mile

Bob: coke is baby pandas.jim: what? how do you figure that coke is baby pandas? bob: because this book says so.jim: how do we know the book is correct? bob: because it says that coke is baby pandas.jim: how does that prove the book's accuracy? bob: because it's statement involving coke and baby pandas is correct, therefore it is accurate.jim: how do we know that it's correct? bob: because we have concluded that the book is accurate, and therefore the statement is correct.therefore, coke is baby pandas.