If $$P = 2^{8} \times 3^{5}, Q = 2^{5} \times 3^{4}$$ and $$R = 3^{5} \times 2^{7}$$, then what is the highest common factor of P, Q and R?

A

$$2^{3} \times 3^{4}$$

B

$$2^{8} \times 3^{5}$$

C

$$2^{2} \times 3^{2}$$

D

$$2^{4} \times 3^{5}$$