All of the courses I have taken, this one is...

Câu hỏi: All of the courses I have taken, this one is the hardest but most interesting

A. All of the courses I have taken are easier than and as interesting as this one

B. All of the courses I have taken are tougher and more fascinating than this

C. No other course I have taken was harder nor less fascinating than this

D. No other course I have taken was as tough nor as fascinating as this one