Correct

大寿

/ dà shòu / 
Strokes

Example

As a Noun

important birthday ［such as the 60th, the 75th, etc］

1
Qìnghè
庆贺
fùqīn
父亲
de
的
jiǔshí
九十
dàshòu
大寿

celebrate Father's 90th birthday