If a "First-Past-The-Post" Country Has Three Viable Political Parties,but No

Multiple Choice

If a "first-past-the-post" country has three viable political parties,but no one ever reaches 50 percent of the vote,what is the most likely result over time?

A) The system will continue to add additional political parties that will be forced to form coalition governments.
B) The two parties that share the most ideologically will merge into a single political party.
C) It will eventually trend toward a one-party system defined by ideological purity.
D) Citizens will demand the creation of a new constitution.