A. is C. stigmatus as the tail is twice as long as in B & largely orange.
http://yutaka.it-n.jp/hes/90300020.html


B. is C. furcatus/furcata as the black mark in space 1b is curved in strongly.
http://yutaka.it-n.jp/hes/90340001.html

C. C. stigmatus as the tornal orange is quite broad.
Both C. stigmatus & furcatus have the FWs basally green.

C. bejaminii is fully blue green.
https://www.ifoundbutterflies.org/me...lesh_aa729.jpg

The male C. xanthopogon is fully brown above.

TL Seow: Cheers.