Which of the underlined atoms in the molecules shown below have sp-hybridization ?
(u) `underset(-)CH_(2)CHCH_(3)`
(v) `CH_(2)underset(-)C CHCI`
(w) `CH_(3)underset(-)CH_(2)^(+)`
(x) `H-C-=C-H`
(y) `H-C-=C-H`
(z) `(CH_(3))_(2)Cunderset(-)N NH_(2)`
A. x and z
B. x,y and z
C. u,w and x
D. v,x and y
