An American executive goes to Yemen to finalize a business deal. He hands over his documents to his Yemeni host with his left hand, which Muslims in Yemen consider unclean. Moreover, he refuses to accept the dry fruits that he is offered, a behavior that deeply offends his host. As a result, the American loses the business deal to his Australian counterpart who was better versed in Yemeni ways. The lack of understanding of _____ is most likely to have resulted in the loss of business for the American executive.

A. the business laws in Yemen
B. Yemeni ethics
C. the business trends in Yemen
D. the banking system in Yemeni
E. Yemeni culture