What is the output of the following code:

#include

using namespace std;

struct rectangleType $\{$

$$ double length;

$$ double width;

$\}$;

int main$()\{$

$$ rectangleType rect $=\{5\mathrm{.}0,2\mathrm{.}5\}$;

$$ cout $<<$ "Area of rectangle: $"<<$ rect.length $*$ rect.width $<<$ endl;

$$ return $0$;

$\}$

Group of answer choices

Error

$12\mathrm{.}5$

Area of rectangle: $12\mathrm{.}5$

Area: $12\mathrm{.}5$