Let ( a = 1, 2, 4, 1, 0, 1, -1, 4, 2, 1, 11, -10 ). Find a pair of vectors ( u, v ) in ( ℝ⁴ ) whose span is the kernel of ( a ). If ( u = v = ):
a) ( (1, 0, 0, 0) )
b) ( (0, 1, 0, 0) )
c) ( (0, 0, 1, 0) )
d) ( (0, 0, 0, 1) )