challenge: What was the purpose of the contract signed between the Peruvian Navy and MTU in 1998?
  
  A. To decommission the PR-72P-class corvettes
  B. To build new PR-72P-class corvettes
  C. To upgrade the armament of the PR-72P-class corvettes
  D. To re-engine three PR-72P-class corvettes
  Answer: 