I’m pretty sure (B) is the right answer.
I’m Spanish and I’m sure that the answer is A!
With adding a “s” at the end, for example with the word “sierra” if I wanted to make it plural I would just add a “s” at the end and it makes it “sierras” which is plural and also another is like with “carro” if I want to turn it into plural I’ll just simply add the “s” at the end and now it’s “carros”.
Allí se suele especificar tu número de teléfono. Llama a tu operadora. Es posible que sean capaces de darte el dato si eres capaz de proporcionar suficientes datos personales como para probar que efectivamente eres tú. Busca en tus propios contactos.
