This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
A full thickness loss of middle one third of the upper lip is best reconstruted by -a) Naso labial flapb) Cheek flapc) Abey flapd) Estlander's flap 
Select and explain. 
A. cd, B. bc, C. bd, D. ac
A: cd
Answer: A: cd 
Explanation: None