Select the correct option for the region labelled as A, B and C in the given diagram ?

• A. A = Never cord
• B. A = Nerve cord B = Notochord B = Noto chord C = Gill slits C = post and part D = Post anal part D = Gill slits
• C. A = Notochord
• D. A = post anal part B = Gill slits B = Gill slits C = Neeve chord C = Nerve cord D = Postanal part D = Notochord
• E. Bufo