What was the link between the political situations in iran and nicaragua during the mid-1980s?

a. us hostages taken by nicaragua were set free after iran funded their release.
b. the us government sent money to both countries to support radical regimes.
c. profits from the arms sold to iran were used to fund the contras in nicaragua.

I believe the answer is: C.Profits from the arms sold to Iran were used to fund the Contras in Nicaragua.

The main purpose of the funding that united States gave to the contras in Nicaragua was to help negotiating the release of several U.S. hostages which were caputred in their territory.

But united states' action caused many groups in that country to have high end weapons which resulted in chaotic middle east situation that we see today.