Question $3(3$ points$)$

Given the following boolean function f $.$ Using Boolean algebra, which of the following expressions can be used to build the corresponding circuit? $($Check all that apply$).$

$f=a^{\text{'}}b+a^{\text{'}}{b}^{\text{'}}+b^{\text{'}}a,(\text{'}$means NOT function$)$

$a^{\text{'}}+b^{\text{'}}$

$a^{\text{'}}+b^{\text{'}}a$

$a^{\text{'}}b+b^{\text{'}}$

$a^{\text{'}}{b}^{\text{'}}$