ANSWER BOTH PARTS PLEASE Justify each answer.

A. Determine which sets in Exercise 19 are bases for R2 or R3 .

[3; -8; 1], [6; 2; -5]

B. (T/F) A subspace of Rn is any set H such that (i) the zero vector is in H, (ii) u, v , and u+v are in H, and (iii) c is a scalar and cu is in H.