1. Add or subtract the following complex numbers:

(a + bi)- (-c + di)

Select one:

A.

(a + c)- (b - d)i

B.

(b - d) + (a + c)i

C.

(a + c)- (b+ d)i

D.

(a + c) + (b - d)i

2. Add or subtract the following complex numbers:

(x + yi) + (u + vi)

Select one:

A.

(x + y) + (u + v)i

B.

(x + u) + (y + v)i

C.

(y + v) + (x + u)i

D.

(u + v) + (x + y)i