Poem: Fire and Ice by Robert Frost

What is the meaning of lines 1-2 in the poem?
a. people should not be afraid of the end of the world
b. some people prefer the heat of fire to the cold of ice
c. the world will be ended by fire and can only be saved by ice
d. there are different views on what forces could end the world

d. there are different views on what forces could end the world