Line 11(C) is a long-term capital loss carryover which can be used to offset any capital gains you may have and then an additional $3000 per year against other income.
Line 11(A) represents excess deductions which have typically wound up on Schedule A in the past. However, since tax reform (the TCJA) has essentially eliminated miscellaneous itemized deductions, that figure will, in all probability, have no utility (although you can enter the $10,847 figure).
