Use your text or www.google.com to search for answers to these VERY specific questions.
The accurate answer is true. Persian King Khosrow I, also known as Khosrow Anushirvan or Khosrow the Great, did indeed forbid Zoroastrian teaching throughout his empire. However, it's important to note that Khosrow I lived before the emergence of Christianity, so the context of him being a Christian is incorrect. Khosrow I ruled the Persian Empire from 531 to 579 CE, while Christianity as a recognized religion emerged after the birth of Jesus Christ.