A vacuum flask is designed with (i) a double-walled glass container having vacuum between the walls, (ii) silvered inner surfaces, and (iii) a cork stopper at the mouth. Which option correctly matches each feature with the mode of heat loss it primarily reduces? (Order: feature (i) / feature (ii) / feature (iii))
a) Convection/Radiation/Conduction
b) Radiation/Conduction/Convection
c) Conduction/Radiation/Convection
d) Conduction/Convection/Radiation