Annular aluminum fins with an outer diameter of 5.5cm are placed on a tube with an outer diameter of 2.5cm. Each fin is 1mm thick. The tube surface is at a temperature of 170°C, while the surrounding fluid temperature is 25°C. What is the heat loss of the aluminum fins?
A) 170°C
B) 25°C
C) 145°C
D) Not enough information provided