What inference does Elie make about Rabbi Eliahou's son when the rabbi is searching for him? A.

a
The son intentionally ran ahead during the march and left his father behind.
b
The son fell behind because he no longer had the strength to run with his father.
c
The son is dead, though Elie does not tell this to the rabbi.
d
Though unlikely, the son might still be alive, giving the rabbi hope to live.

d

Though unlikely, the son might still be alive, giving the rabbi hope to live.