This was a two part question! I think I got the first part but the second part I'm stuck! Please help

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

When are triangles considered similar? a. corresponding angles are equal andcorresponding sides are proportionalb. corresponding angles are proportional andcorresponding sides are equalc. corresponding angles are equal orcorresponding sides are proportionald. corresponding angles are proportional orcorresponding sides are equal select the best answer from the choices providedmark this and retumsave and exitnext

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*