On December $31,2021,$ Indigo $($a person whose spouse had died$)$ gives $$16,000$ to each of five married children, their spouses, and to six grandchildren. On January $2,2022,$ the procedure is repeated. How much is the total annual exclusion for nontaxable gifts for $2021?$

a$.$ $$16,000$

b$.$ $$256,000$

c$.$ $$176,000$

d$.$ $$512,000$

e$.$ $$32,000$