After 18 Months as Office Manager in Taiwan, Bill Smythe

After 18 months as office manager in Taiwan, Bill Smythe called his boss, Joseph Milhouse, headquartered in Chicago. Bill said, "Joseph, I hate to tell you this, but things aren't well on the home front. We just haven't been able to make the adjustment to living in a foreign country. I'd like to request a transfer back to the States." Joseph replied, "Let me see what I can do." After the phone conversation was concluded, Joseph sadly reflected that, as is often the case, an expatriate, in this case Bill, had failed in a foreign assignment due to

A) extensive travel.
B) cultural differences.
C) family issues.
D) language barriers.
E) religious beliefs.