Answer:
The correct answer is option B.
Step-by-step explanation:
An electronics manufacturing company is headquartered in London. It has a marketing unit in New York.
Peter is a British resident, who works in the London office of the company. Keith is a US citizen and works in the New York marketing unit.
Since the company is headquartered in London, its parent country is Britain. The US is a host country for the company.
So Peter is a parent country national and Keith is host country national.