i Z l 1. Three vectors are given by their coordinates: a =L Ii, b =[ 2 J, c = [3 the necessary problem(s) and select exactly one right answer from (a), (b, (c), (d): (a) the set {a,b,c} is a basis in R2 J. Solve (b) the set {(1,1)} is a basis in R2 (c) the set {the} is a basis in R2 (d) the set {tub} spans vector c