In $2023,$ Amanda and Jaxon Stuart have a daughter who is $1$ year old. The Stuarts are full$-$time students and are both $23$ years old. Their only sources of income are gains from stock they held for three years before selling and wages from part$-$time jobs.

What is their earned income credit in the following alternative scenarios if they file jointly? Use Exhibit $8-10.$

Note: Leave no answer blank. Enter zero if applicable.

a$.$ Their AGI is $$18,800,$ consisting of $$13,900$ of capital gains and $$4,900$ of wages.