What is the difference of
7
8
−
1
3
?

A.
7
+
1
8
+
3
=
8
11
B.
7
−
1
8
−
3
=
6
5
C.
7
×
1
8
×
3
=
7
24
D.
(
7
8
×
3
3
)
−
(
1
3
×
8
8
)
=
21
24
−
8
24
=
13
24