When using work-stealing scheduling strategy, an idle core should always try to steal a thread from one and only one specific core. Select one: O True False Which of the below is true regarding MPI? Select one or more: O a. every process in the group of processes has its own copy of the entire program being executed b. every process has its own copy of variables O c. after being created, processes must synchronize in order to start executing their assigned work d. the rank of the process can be used to specify what the process should execute