The annual rate provided by paragraph (1), (2), (3), or (4) of this subsection, as appropriate, shall (A) be increased by $2,020 for each child of such veterans (or of either such veteran) who is in the custody of either or both such veterans or to whose support either such veteran is, or both such veterans are, reasonably contributing, and (B) be reduced by the amount of the annual income of both such veterans and, subject to subsection (h)(1) of this section, the annual income of each such child.