Why might leading early in the polls be crucial to a politician running for offi

Why might leading early in the polls be crucial to a politician running for office?

A) Those who trail in the early polls statistically get more contributions, more news coverage, and thus more supporters over the course of the campaign.
B) Those who lead in the early polls get fewer contributions, but they receive more news coverage, and thus more supporters.
C) Those who trail in the early polls get more contributions, but less news coverage, and a middle-range number of supporters.
D) Those who lead in the early polls get more contributions, more news coverage, and thus more supporters.

This is for my political science class.