在我国进出口贸易中，知识产权权利人在口岸发现侵权嫌疑货物后，可以直接向（）申请采取责令停止侵权行为或者财产保全的措施。

A．工商局

B．人民法院

C．口岸海关

D．商务部

Antonio Conti consumes 2 pounds of beef per week when beef is $4.50 per pound and 3 pounds of chicken when chicken sells for $ 3.50 per pound. If the price of chicken increases to $ 4.00 per pound, Conti’s consumption of beef increases to 2.5 pounds per week. Which of the following most accurately describes Conti’s cross elasticity of demand for beef versus chicken The cross elasticity of demand for:（）

A. beef relative to chicken is +1.67 and beef and chicken are complimentary goods.

B. beef relative to chicken is +1.67 and beef and chicken are substitutes.

C. chicken relative to beef is +1.75 and beef and chicken are substitutes.