India's attitude towards China has all along been pusillanimous.

Answer: Option B

Generous : showing a readiness to give more of something, especially money, than is strictly necessary or expected.
Cowardly : lacking courage.
Subversive : seeking or intended to subvert an established system or institution.
Restrained : characterized by reserve or moderation; unemotional or dispassionate.
Pusillanimous : showing a lack of courage or determination; timid.

Synonym of Pusillanimous is Cowardly