a. Addition property of equality
b. Identity property of addition
c. Division property of equality
d. Identity property of multiplication

A.
1: b
2: a
3: d
4: c
B.
1: a
2: c
3: b
4: d
C.
1: b
2: a
3: c
4: d
D.
1: a
2: b
3: c
4: d