For first order parallel reactions `k_(1)` and `k_(2)` are 4and `2min(-1)` respectively at 300 K. If the activation energies for the formation of B and C are respectively 30,00 and 38,314 joule/ mol respectively, the temperature at which B and C will be obtained in equimolar ratio is :
A. 757.48 k
B. 378.74k
C. 600 k
D. none of these