Critical care surgeons get paid higher salaries than family doctors because​

A) ​they usually work under highly stressful conditions
B) they usually have to get longer training
C) they usually work uncertain hours
D) ​all of the above

​You are at a restaurant deciding if you would like some dessert after the meal.The dinner is over so you do not want anything else but the dessert.The opportunity cost of getting the dessert would include

A) ​Nothing,because you are already there
B) Another round of appetizers possibly
C) Anything else you could buy
D) ​None of the above

The following jobs are waiting to be processed at your work centre, which cleans valve body castings. Job numbers are assigned sequentially upon arrival in the facility (a missing number means that job does not require your work centre). All dates are specified as days from Today.
$$\begin{array}{ccc}\text{ Job }& \text{ Due Date }& \begin{array}{c}\text{ Duration }\\ \text{ (days) }\end{array}\\ 101& 51& 9\\ 102& 31& 12\\ 104& 41& 11\\ 107& 32& 8\\ 108& 37& 10\end{array}$$ a. In what sequence should the jobs be processed according to the FCFS scheduling rule?
b. In what sequence should the jobs be processed according to the EDD scheduling rule?
c. In what sequence should the jobs be processed according to the SPT scheduling rule?
d. In what sequence should the jobs be processed according to the LPT scheduling rule?