Which sentence would work better as a thesis statement for a three-to-five-page college paper?

Remember that a thesis should be a central idea that requires supporting evidence; it should be of adequate scope for essay's length; and it should be sharply focused.

A.Because it has become outdated, the electoral college should be replaced by a system that allows the US president to be elected by direct popular vote.

B.Rather than voting for a presidential candidate, voters in a US presidential election merely choose their state's electoral college representatives, who actually vote for the president.

In most states, all of the electoral votes go to the candidate who wins the popular vote in that state, no matter how close the outcome.