Option B: Without any information on the % of the total time for which the fireplace is left 'on' in very cold temperatures, I'm not sure how this option, however true it may be, resolves the apparent discrapency.
Option E: Not convinced how this can be written off as a possible explanation for the discrepancy when this option implies very clearly that fireplaces have become an obsolete and/or irrelevant factors in heating homes, so very cold places can afford to not have fireplaces anymore??
Option E: Not convinced how this can be written off as a possible explanation for the discrepancy when this option implies very clearly that fireplaces have become an obsolete and/or irrelevant factors in heating homes, so very cold places can afford to not have fireplaces anymore??
