Can you help me with this question?

Exercise 1. (a) Without doing any calculations explain why the vectors 1121 1245 3222 1245 1245 2435 2345 ' 463i] ' 5555 5235 2827 3657r do not form a basis for R4. (12) Without doing any calculations explain why the vectors 1121 1245 3222 1927 1111 1245 1245 2435 3456 1221 2345 ' 463D ' 5555 ' 4568 ' 3443 5235 2827 3651r S4457r 9889 do not form a basis for R4. (c) Do the vectors 1 l 1 1 D 1 1 4 [I , 1 , 1 9 2 . D 0 1 5 form a basis for R4? Explain. (You'll have to do at least some calculations for this ans.)