Hãy chọn câu đúng nhất được thành lập từ các cụm từ gợi ý
: travelling / plane / fast / expensive / travelling / train

• A. Travelling by plane is more faster but more expensive than travelling by train
• B. To travel by plane is much faster but more expensive than travelling by train
• C. Travelling by plane is much faster but much expensive than travelling by train
• D. Travelling by plane is much faster but more expensive than travelling by train