please explain step by step that I can totally understand this question, thank you!

1 1 c 0+1 3 1 1 (3+ 1 0+3 3 Question 3: Let '31 2 {6'2 2 ,U3 = ,'U4 = 9H5 = O 0 1 2 0 O 1 0 1 1 where c is a real number. Let S 2 {61552363364365}' (a) Explain in words why the set 5' must be linearly dependent. (b) Solve the linear system: A5? = 6, where A = [171 172 "'3 "'4 175]. Write your solution in a parametric vector form. {0) Find a linearly independent subset of S that has the same span as S