If \(\frac {3^{a+3} \times 4^{a+6} \times 25^{a+1}}{27^{a-1}\times 8^{a-2}\times 125^{a+4}} = \frac {4}{15^{26}}\), then the value of \(\sqrt {a + 9}\) is:

• A. 8
• B. 5
• C. 4
• D. 6