Allah, glorious is His praise, said concerning the compensation for game: "An offering brought to the Ka'bah, or an expiation: the feeding of needy people, or the equivalent of that in fasting." [Surah al-Ma'idah: 95]
Imam Ata (may Allah have mercy on him) said: "(He may choose) whichever of them he wishes; and wherever the words 'or, or' occur in the Qur'an, the person has the choice to pick whichever of them he wishes."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / Q9894