假设以下两个临界区是关于某一临界资源的,进程P1,P2运行时,可能出现的问题是( ) inside1,inside2:Boolean inside1 := false; /* P1不在其临界区内 */ inside2 := false; /* P2不在其临界区内 */ cobegin process P1 Begin while inside2 do begin end; //while(inside2);A inside1 := true;//B 临界区; inside1 := false; end; process P2 begin while inside1 do begin end; //while(inside1);C inside2 = true;//D 临界区; inside2 := false; end; coend