Three rods made of same material and having the same cross-section ...

Three rods made of same material and having the same cross-section have been joined. Each rod is of the same length. The left and right ends are kept at \( 0^{\circ} \mathrm{C} \) and \( 100^{\circ} \mathrm{C} \) respectively. The temperature at the junction of the three rods will be.
Trvics Wali) a. \( 50^{\circ} \mathrm{C} \)
b. \( 60^{\circ} \mathrm{C} \)
c. \( 66.6^{\circ} \mathrm{C} \)
d. \( 40^{\circ} \mathrm{C} \)