If $\#$ denotes one of the four arithmetic operations addition, subtraction, multiplication, and division, what is the

If $\#$ denotes one of the four arithmetic operations addition, subtraction, multiplication, and division, what is the value of $1 \# 2?$

(1) $n \# 0 = n$ for all integers $n.$
(2) $n \# n = 0$ for all integers $n.$

Answer: B

Source: GMAT Prep

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