15 pts*** Please help quick

1) How can the commutative property of addition be used on the expression 5i-8-4i+2 so the real numbers are at the beginning of the expression and the imaginary numbers are at the end?

A: interchange -8 and 5i
B: interchange 5i and 2
C: interchange -8 and -4i
D: interchange -4i and 2

2) Use the assosiative property of an addition to regroup the terms -5+(3i+8)

A: (3i+8)-5
B: -5+(8+3i)
C: (3i-5)+8
D: (-5+3i)+8