Which of the given Boolean equations is in Product$-$of$-$Sums $($POS$)$ form?

The following multiple$-$choice options contain math elements, so you may need to read them in your screen reader's $$reading$$ or $$browse$$ mode instead of $$forms$$ or $$focus$$ mode.

Choice $1$ of $4$:

F

$($

A

$,$

B

$,$

C

$)$

$=$

A

$$

B

$+$

A

$+$

A

B

C

$$

F$($A$,$B$,$C$)=$A

$$

B$+$A$+$ABC

$$

Choice $2$ of $4$:

F

$($

A

$,$

B

$,$

C

$)$

$=$

A

$$

$($

B

$+$

C

$)$

$+$

B

$$

$($

A

C

$$

$+$

B

$)$

F$($A$,$B$,$C$)=$A

$$

$($B$+$C$)+$B

$$

$($AC

$$

$+$B$)$

Choice $3$ of $4$:

F

$($

A

$,$

B

$,$

C

$)$

$=$

$($

A

$$

$+$

B

$+$

C

$$

$)$

$($

A

$$

$+$

B

$+$

C

$)$

$($

A

$+$

B

$$

$)$

F$($A$,$B$,$C$)=($A

$$

$+$B$+$C

$$

$)($A

$$

$+$B$+$C$)($A$+$B

$$

$)$

Choice $4$ of $4$:

F

$($

A

$,$

B

$,$

C

$)$

$=$

$($

A

$$

$+$

B

$+$

C

$)$

$($

A

B

$$

$+$

B

C

$)$

F$($A$,$B$,$C$)=($A

$$

$+$B$+$C$)($AB

$$

$+$BC$)$