In an electoral tie, how would the Senate pick two people for VP if there's a tie for second place?

[Ferguson97]

The Constitution stipulates that if no candidate receives a majority of electoral votes, then the election is sent to Congress. The House picks between the top three candidates for President, and the Senate picks between the top two candidates for Vice President.

What would happen if there were a tie for second place? Suppose there is a really close three way race.

Democratic ticket: 188 electoral votes.
Republican ticket: 175 electoral votes.
Libertarian ticket: 175 electoral votes.

So while the House wouldn't have a problem here since only three candidates received electoral votes at all... what would the Senate do?

They can't vote between the top two recipients, since there is a tie for second place?

What would happen here?