请选择DCBA4j:G([6i5s.{:l0K.y/l,U'V.f/i4x4M2oAn old friend of my sister’s always helps my brother and ______ with _________ lessons.:G;{6f1n3p;y
A. I … our:G;{6f1n3p;y
B. me … ourselves:G;{6f1n3p;y
C. I … my:G;{6f1n3p;y
D. me … our:G;{6f1n3p;y