After a winter storm, the padlock to your garage door is covered in ice. If there is 80 g of ice at -15°C on the lock, how long will you need to use a 1500W blow dryer, which operates at 15% efficiency, to turn the ice into water at 1°C?

a) 20 minutes
b) 30 minutes
c) 40 minutes
d) 50 minutes