The sequence $${a}_{1}$$, $${a}_{2}$$, ..., $${a}_{n}$$, ... is such that $${a}_{n}=4a_{n-1}-{3}$$ for all integers $$n > 1$$. If $${a}_{3}={x}$$, then $${a}_{1}$$ =
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A4x – 3
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B16x – 15
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C$$\frac{x+3}{4}$$
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D$$\frac{x+3}{16}$$
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E$$\frac{x+15}{16}$$
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正确答案: E