Matlab Question

This problematic program should sum together all of the numbers in both input

arrays and returns that sum as the output. $($assuming "array$1"$ and "array$2"$

have same length$)$ Which one of the following statements is a reasonable

correction? $($Note: the correction may not fully fix the function$)$

function $[$totalSum$]=$ programToFix$($array$1,$array$2)$

totalSum $=1$;$?1$

$n=$array$1$;

for $i=1$:$1$:$n?2$

totalSum $=$array$1(i)+$array$2(i)+$ totalSum; $?3$

end

Location $?1$: "totalSum" shall be initialized as $0$

Location $?2$: counting variable $"$i$"$ shall go as $"i=n$:$1$:$1"$

Location $?2$: interval of counting variable shall be $"2"$ instead of $"1"$

Location $?3$: $"+$ totalSum" shall be removed from righhand$-$side of $"="$