The correct option is A OF2<OHF<OH2
As we go from OH2 to OF2, the bond pair in O-X(where X=H,F) moves closer towards X, since the electronegativity of F is greater than that of O. Consequently the distance between the electrons increases, which further decreases the bond pair-bond pair repulsion, which decreases the bond angle. Therefore, the sequence of bond angle would be OF2<OHF<OH2