Which sentence from the article provides the BEST support for the following statement?
What takes place in Iowa can propel a candidacy to victory or doom it.
A) Humphrey won the nomination even though he hadn’t won a single primary.
B) In 2020, Iowa will have only 49 delegates out of the estimated total of 4,594 Democratic delegates
C) The victory set him off on the path to winning the nomination and the presidency.
D) The members of a non-viable candidate’s group are asked to join another candidate's group or declare themselves “undecided.”