Lim 4^n - 2^{n + 1}} + 1 / 3^{n - 4 - 4^n + 1 bằng27/39\(\mathop {\lim }\limits_{n \to + \infty } \frac{{{4^n} - {2^{n + 1}} + 1}}{{{3^{n - 4}} - {4^{n + 1}}}}\) bằng\(\frac{5}{{16}}\)\( - \frac{5}{{16}}\)\(\frac{1}{4}\)\( - \frac{1}{4}\)Giải thíchChọn D