In Christmas carol What did scroooge say after Marley visited him?

Answer 1

Scrooge closed the window, and examined the door through which the Ghost had entered. It was double-locked, as he had locked it with his own hands previously, and the bolts undisturbed. He tried to say "Humbug!" but stopped at the first syllable

Answer 2

Scrooge expresses disbelief and initially attributes Marley's ghostly visit to a "bit of bad beef" or a "crumb of cheese." He questions his own senses and tries to rationalize the encounter before finally acknowledging that Marley's spirit is real.