<human>: Q: What book is considered to be the source of many Orthodox beliefs regarding Mary?
 A: The Orthodox believe that Mary was instrumental in the growth of Christianity during the life of Jesus, and after his Crucifixion, and Orthodox Theologian Sergei Bulgakov wrote: "The Virgin Mary is the center, invisible, but real, of the Apostolic Church."
 Does the answer correctly answer the question

OPTIONS:
- yes
- no
<bot>: no