In allene (C3H4), the type(s) of hybridisation of the carbon atoms is (are) [IIT JEE 2012]

In allene (C3H4), the type(s) of hybridisation of the carbon�

1.	In allene (C3H4), the type(s) of hybridisation of the carbon atoms is (are) [IIT JEE 2012]
A.	sp and sp3
B.	sp and sp3
C.	Only sp2
D.	sp2 and sp3
Answer» C. Only sp2