Which choice correctly uses compensation to multiply
4
×
38
?

A.
4
×
40
=
160
4
×
2
=
8
160
−
8
=
152
B.
4
×
40
=
160
4
×
2
=
8
160
+
8
=
168
C.
4
×
40
=
160
160
×
2
=
320
D.
4
×
40
=
160
4
×
2
=
8
160
×
8
=
1,280