Hello Aspirant ,

Hope you are doing great.

If you are from medical or biology stream you can write PCB in KCET . where in KCET you will be given seperate ranking for PCB and PCM . If you opt for PCB you could get only medical field like veterinary, agriculture  science and ayurveda science . if you want engineering field you must write PCM .

Hope this helps you .

All the best