With legal migration, governments need to persuade voters that they are accepting immigran

With legal migration, governments need to persuade voters that they are accepting immigrants who will be______for the country, rather than those who will______drain resources.

A．beneficial… merely

B．jingoistic … withal

C．exotic … constantly

D．amusing… ungraciously

E．helpful … seldom

请帮忙给出正确答案和分析，谢谢！