I believe it's A.
The Muslims did control Jerusalem for a time, and I believe that they forced the Christians out of it.
Also the Crusaders did sack Constantinople when they were not allowed in by the government there.
I don't know what D is but I'll assume that it is true because I think A is false.
Answer:
im pretty sure its B, dude
When showing manners or respect people in the Chinese culture.
Hitler's final solution to the "Jewish problem" was extermination. Those who were stronger were sent to labor camps to work until they were deemed "unworthy". Those who were deemed "unworthy" in the beginning and later on, were sent to extermination camps, where they were gassed and then were sent to the crematorium, and then buried in mass graves.
hope this helps