A Student Finds a Blank Liquid Bulb Thermometer and Calibrates

A student finds a blank liquid bulb thermometer and calibrates the scale by placing it in ice water and placing a reference mark at the level of the fluid. The student places the thermometer in boiling water and finds that the fluid level is 12.0 cm above the reference mark. What is the temperature when the fluid level is 2.4 cm above the reference mark?

A) 2.4°C
B) 24°C
C) 25°C
D) 28°C
E) 20°C