Question

My dad, aunt Maria, uncle diego, and my cousin were all there, but mom couldn't come.

Which is the correct way to capitalize this sentence?

A. my dad, Aunt Maria, Uncle Diego, and my cousin were all there, but Mom couldn't come.
B. My Dad, aunt Maria, uncle Diego, and my Cousin were all there, but Mom couldn't come.
C. My dad, aunt Maria, uncle Diego, and my cousin were all there, but Mom couldn't come.
D. My Dad, Aunt Maria, Uncle Diego, and my Cousin were all there, but Mom couldn't come.