Albert and Avery, ages $66$ and $64,$ respectively, filed a joint return for $2023.$ They provided all of the support for their $19-$year$-$old son, who is blind and

had no gross income. They also provided the total support of Avery's father, who is a citizen and life$-$long resident of Peru. What is the amount of credit

for other dependents that Albert and Avery can claim?

a$.$ $$1,000$

b$.$ $$0$

c$.$ $$2,000$

d$.$ $$500$