STATE HELP! Lived in NC till Aug then move to SC. Had SAME JOB in SC whole year. W-2 with SC taxes only, bank interest, alimony received and 1099G for State refund

NEED SC/NC STATE HELP. Worked same job in SC all year. Lived in NC from Jan-July then moved to SC permanently. SC lets me choose to file RES or NONRES. Having TT issues applying monies to each refund please explain in detail if able thank you