At 1000 K, the value of Kp for the reaction : A(g)+2B(g)⇌3C(g)+D(g) is 0.05 atm. The value of Kc in terms of R would be:
A. 20000R
B. 0.02R
C. 5×10⁻⁵ R
D. 5×10⁻⁵ × R⁻²