What does the "light" mentioned in the poem most likely represent?

Question 4 options:

A) The light most likely represents life; the speaker tells his father to "rage, rage against the dying of the light" as he encourages him to be strong in the face of death.

B) The light most likely represents the afterlife (i.e. heaven); the speaker is attempting to guide his father to a peaceful afterlife.

C) The light most likely represents death; Thomas uses light in this way by putting a twist on the phrase "light at the end of the tunnel."

D) The might most likely represents love; the speaker begs his father to remember the love he has for his family in order to fight death.