GIven:
CPU's - N
Processes -K
A. Although Number of processes in ready queue is independent of number of CPU's but given only K processes at any instance K-N(when K>N) processes , max. can be in Ready queue.
B.it is possible.When Each process requires some event to occur,like keyboard input.
C.it is possible only when (K<N). At any instance maximum number of processes at any instance is N.
D.its true.Each CPU is running one process.
So. Drawing Conclusion A and C are false.
Note: this Question is ambiguous. There should be relation between N and K to be nice.