Another typo. I was trying at one point to create a plausible contradiction, but gave up, yet it seems I left a completely unrelated answer there for part e.

The real answer is either of these:
(p→q)∧p
p→(q∧p)

Incidentally, the words that would have gone with the answer I left in the key would have been The gate is open and the gate is not open or the llama didn’t escape..