The co-ordinates of points \[A,B,C,D\]are (a, 2, 1), (1, ?1, 1), (2, ? 3, 4) and (a+1, a+2, a+3) respectively. If \[AB=5\]and \[CD=6\], then \[a=\]

The co-ordinates of points \[A,B,C,D\]are (a, 2, 1), (1, ?1, 1), (2, ?

1.	The co-ordinates of points \[A,B,C,D\]are (a, 2, 1), (1, ?1, 1), (2, ? 3, 4) and (a+1, a+2, a+3) respectively. If \[AB=5\]and \[CD=6\], then \[a=\]
A.	2
B.	3
C.	? 2
D.	? 3
Answer» E.

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The co-ordinates of points \[A,B,C,D\]are (a, 2, 1), (1, ?1, 1), (2, ? 3, 4) and (a+1, a+2, a+3) respectively. If \[AB=5\]and \[CD=6\], then \[a=\]

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