Consider the following first order reaction,
2A(g) `rarr` 2B(g) + C(g)
Starting with pure A having pressure 2 atm initially, the total pressure is 3 atm after 2 hrs. Then total pressure after 4 hrs will be :
A. 4 atm
B. `1.5` atm
C. 5 atm
D. `3.5` atm