Compound Beam with Internal Hinge: Reactions

A compound beam ABC has a pin at A, internal hinge at B ($4\,\mathrm{m}$ from A), and roller at C ($8\,\mathrm{m}$ from A). A $10\,\mathrm{kN}$ downward load acts at $6\,\mathrm{m}$ from A (midpoint of BC). Find $A_y$ and $C_y$.