Whiten describes the letter that belongs where the question mark is

Asapembassies differ from consulates in thata) compared to a consulate, an embassy is a smaller representation of a nation's government in a foreign country. b) consulates are permanent diplomatic missions generally located in a country’s capital, whereas a country may have a number of embassies in various cities. c) embassies are permanent diplomatic missions generally located in a country’s capital, whereas a country may have a number of consulates in various cities. d) embassies deal solely with economic diplomacy and trade relations, whereas consulates deal primarily with political and diplomatic relations with the host nation. e) countries establish embassies in another nation only if it recognizes the sovereignty of that country, whereas consulates exist without regard to recognition of a nation's sovereignty.