Dear Rumple Professor Teh has only possible limbs for his defence but all are tied to Darrine's testimonies , statements and her demeanor on the stand under cross examination. ......................... Which limb to chose depends on what evidence has , on hand kept for purposes of the affair. If he has deleted the past SMSes from darrine . private forensic data recovery can and will do wonders. But if I had to take a rational bet, I would chose b, and chose not to discredit the sole witness for the prosecution.