阅读下面的C++代码，执行后其输出是（ ）。

int stepCount = 0;
int fracA(int N)
{
    stepCount += 1;
    cout << stepCount << "->";
    int rtn = 1;
    for (int i = 1; i <= N; i++)
        rtn *= i;
    return rtn;
}
int fracB(int N)
{
    stepCount += 1;
    cout << stepCount << "->";
    if (N == 1)
        return 1;
    return N * fracB(N - 1);
}
int main()
{
    cout << fracA(5);
    cout << "<===>";
    cout << fracB(5);
    return 0;
}

{{ select(1) }}

• 1->120<===>2->120
• 1->120<===>1->120
• 1->120<===>1->2->3->4->5->120
• 1->120<===>2->3->4->5->6->120