Consider a programmer attempting to write a function named fib that computes the nth number in the Fibonacci sequence. If the body of the function consists only of the following line of Python code, what would be the result of calling this function with an argument of $5?$

return fib$($n $1)+$ fib$($n $2)$

Question $12$ options:

a$)$

The function would return $5$ to the caller.

b$)$

The PVM would raise a syntax error.

c$)$

The function would return$-5$to the caller.

d$)$

The PVM would raise a stack overflow error.