Two slabs A and B of different materials but of the same thicknesss are joined end to end to form a composite slab. The thermal conductivities of A and B are `K_(1)` and `K_(2)` respectively. A steady temperature difference of `12^(@)`C is maintained across the composite slab. If `K_(1) = K_(2)/2`, the temperature difference across slabs A is

Options

A. `4^@C`
B. `8^@C`
C. `12^@C`
D. `16^@C`

Answer

B