The road by Mccarthy

All the following details depict the struggle the father and son endure to survive in the inhospitable landscape EXCEPT:
A) Necessity of campfires to stave off the cold
B) Their feet wrapped in coarse material to protect from the snow
C) Leaning into the wind as they traipsed along switchbacks
D) The lack of food needed to sustain them
E) Keeping distance from the hungry bears in the wooded slopes​