Attack or defend ?

Study the position. Which is the best move for White ?

(a) Rf7+ then capture the pawn on f4
(b) h6 advancing the pawn towards promotion
(c) Rc7 attacking the black rook

Solution

👍  Two games I recently completed on ChessWorld.net 
I have annotated the last half of each game to tease out the thinking behind the moves

Game 1
White's queen is trapped which turns the game

Game 2
White goes into the endgame with an extra pawn, two passed pawns on the queenside, an active king on the kingside which decides the game.