If A = 1 - i, B = 2 - i, C = 1 + i, and D = 2 + i then ABCD would be?

Select one:

a.4

b.-4

c.10

d.-10

e.None of these

The roots of x²+ 5 x - 19 = 0 are:

Select one:

a.(5 + 9)/2, (5 + 9)/2

b.(5 - 9)/2, (5 - 9)/2

c.(5 - 9)/2, (5 + 9)/2

d.(-5 - 9)/2, (-5 + 9)/2

e.None of these

The remainder of x⁸- 37x⁵+ 38x - 37 divided by x is:

Select one:

a.37

b.38

c.-38

d.-37

e.None of these