A6. The value of the expression $\frac{a^{0}+b^{0}}{(a+b)^{0}}+\left(a^{2}+b^{2}\right)^{0}$ is equal to:
(A) 1
(B) 3
(C) $a+b$
(D) 2
(E) none of the above

## II. PART




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A6. We simplify the expression $\frac{1+1}{1}+1=3$.

II. PART