Which of the following pairs are correctly matched ?
`{:(,"Animals",,"Morphological features"),("(i)","Crocodile",-,"4-chambered heart"),("(ii)","Sea urchin",-,"Parapodia"),("(iii)","Obelia",-,"Metagenesis"),("(iv)","Lemur",-,"Thecodont"):}`
A. Only A and B
B. A,C and D
C. B,C and D
D. Only A and D
