What was the main argument made by Ramachandran Suppiah during the appeal hearing?

A. That he and Krishnan planned to kill Packiria Pillai Krishnasamy
B. That he and Krishnan only planned to commit robbery, without intending to harm Packiria
C. That Krishnan acted alone in stabbing Packiria
D. That the letter-opener was a mere prop and not used in the crime
Answer: 