Input: A non$-$negative integer

$(1)$ if n$=0$

then return $1$

$(2)$ let c:$=1$

$(3)$ let i:$=0$

$(4)$ repeat

$--($a$)$ let i:$=$i$+4$

$--($b$)$ let c:$=$c$.(4)$

$(5)$ until i$=$n

$(6)$ return c

What does the algorithm return when the input is n$=1$

$?$

What does the algorithm return when the input is n$=3$

$?$

What does the algorithm return when the input is $5$

$?$

What does the algorithm return when the input is a non$-$negative integer

$?$

A$.$

B$.$

C$.$

D$.$ The greatest common divisor of

and

E$.$ The remainder of the division of

by

$.$

F$.$ The difference of the first

natural numbers and $4.$