题目信息
If r and s are positive numbers and θ is one of the operations, +, −, *, or ÷, which operation is θ?
1.If r = s, then r θ s = 0.
2.If r ≠ s, then r θ s ≠ s θ r.
A:Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B:Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C:BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D:EACH statement ALONE is sufficient.
E:Statements (1) and (2) TOGETHER are NOT sufficient.
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正确答案：
A:Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
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