I had a question like this for my class a long long time ago when I was in elementary school kind of and if I’m correct the answer was B for my class but it could be different for you
It's Fuerte for man and woman same as one person or other but if you have multiple-choice and is not in there then it has to be Fuertoso singular and for plural fuertes or fuertosos. they are less common do.
Hope I had helped.
