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Which of the following statements is/are correct?
A. If $$2^{x}=3^{y}=6^{-z}, then \frac{1}{x}+\frac{1}{y}+\frac{1}{z}=0$$
B. $$(243)^{0.16}\times(9)^{0.1}=0.3$$
C. If $$3.105 \times10^{p}=0.00239 + 0.000715$$, then P = -3