Which option best revises the paragraph to convey the same meaning while maintaining a formal tone throughout?
Long before the refrigerator was invented, people prevented food from
spoiling by drying it with the sun's heat. This process enabled food to
be stored and consumed during the cold winter months when food
was scarce. A bunch of years later, people figured out how to put food
in cans, and that meant that it would be good to eat for even longer.
A. Long before the refrigerator was invented, people prevented food
from spoiling by drying it with the sun's heat. Once food was dried
out like this it would last for a while and you could even eat
something in the winter that you had found way back in the
summer. Then, a bunch of years later, people figured out how to
put food in cans to keep it good.
B. Way back when people didn't understand about using refrigerators