【单选题】

The author considers those historians who describe early feminists in the US as "solitary" to be
A．insufficiently aware of the ideological consequences of the Seneca Falls conference.

B．overly concerned with the regional diversity of feminist ideas in the period before 1848.
C．insufficiently concerned with the social conditions out of which feminism developed.
D．insufficiently familiar with the international origins of 19th-century American feminist thought.