In the Gauss plane, the set: {2€6:12+1-ilsva, Rez+ Im z>0} a) is a half-disk that intersects the set of strictly negative real numbers. b) contains the set B = {2€ 6:2=iy, with y=0} c) is a disk d) contains point only e) is a half-disk that intersects the set B = {z € C: z=iy, with y>0} one how I solved it z: a+ib la+ib+1-il≤√2 √(a+1)² +i(b-1)² <√Z (a + 1)²+i(b-1)² ≤2 C: -1,1 R: 2 paz-y

This is how I solved it but I don’t know which option to pick just because I don’t understand them could you please help me out there