Consider the following statements:The Fourier heat conduction equation Q = -kA(dT/dx) presumesi. Steady-state conditionsii. Constant value of thermal conductivity.iii. Uniform temperatures at the wall surfacesiv. One-dimensional heat flow.Which of the above statements are correct?

• A. (i), (ii) and (iii) are correct
• B. (i), (ii) and (iv) are correct
• C. (ii), (iii) and (iv) are correct
• D. (i), (iii) and (iv) are correct