[] 1 wood
[] 2 gas
[] 3 coal
[] 4 oil or kerosene
[] 5 electric
[] 6 don't have

a) the type of fuel or energy predominantly used.
Firewood is considered any product of plant origin (sawdust, straw from rice or coffee, coconut shells, etc.) but not including charcoal;
b) Does not have - when the dwellings do not have any stove or are served by portable stoves, usually referred to as braziers (fogarareiros).