The linear coefficient of expansion of aluminium is 23 x 10^-60C^-1, and that of iron is 11 x 10^-60C^^-1. The length of an aluminium rod is 0.24 times the length of an iron rod when both are at 0°C. The temperature of the aluminium rod is increased to 60°C while that of the iron rod is increased to 45°C. Calculate the ratio of the increase in length of the aluminium rod to that of the iron rod.

• A.1.00:0.67
• B.1.00:1.49
• C.4.00:3.00
• D.2.10:1.00