Puzzle with slam theme

White to move? This is an easy checkmate.
A) 1. Kc1 Qxe3+ f.b. Qg1#
B) 1. Qc2 Qxc2+ 2. Ke1 Qe2#
C) 1. Ke1 Qxe3+ f.b. Qc1# or Qg1#
White to move? This is an easy checkmate.
A) 1. Kc1 Qxe3+ f.b. Qg1#
B) 1. Qc2 Qxc2+ 2. Ke1 Qe2#
C) 1. Ke1 Qxe3+ f.b. Qc1# or Qg1#