The Reaction Below Has a K_c Value of 1

The reaction below has a K_c value of 1.0 × 10¹² M^-1. What is the value of K_p for this reaction at 500 K? 2SO₂(g) + O₂(g) ⇌ 2SO₃(g)

A) 4.2 × 10^-11 bar^-1
B) 1.0 × 10¹² bar^-1
C) 2.4 × 10^-12 bar^-1
D) 4.1 × 10¹³ bar^-1
E) 2.4 × 10¹⁰ bar^-1