a |
b |
c |
a |
b |
c |
a |
c |
b |
0 |
a |
b |
a |
b |
b |
c |
a |
c |
a |
b |
c |
a |
b |
a |
b |
a |
b |
A.1 | B.2 | C.3 | D.4 |
a |
b |
c |
c |
c |
a |
b |
b |
b |
c |
b |
c |
a |
a |
c |
b |
c |
b |
c |
a |
c |
a |
c |
b |
c |
b |
c |
a |
a |
c |
b |
c |
a |
b |
a |
b |
a |
b |
a |
b |
c |
a |
b |
c |
a |
b |
b |
c |
1 |
3 |
B+C |
2 |
3 |
2 |
a |
b |
b |
a |
b |
a |
2b |
a |
A.2 | B.3 | C.5 | D.6 |
AC |
BC |
OA |
OC |
13 |
OB |
OC |
a |
b |
a |
b |
b |
a |
a |
b |
A.
| B.
| C.
| D.
|
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