It’s A that’s the answer for you ok
You can ask if you go somewhere a specific day for example voy allí el lunes which us do I go there Monday.
Mentira? I'm not sure you would have to give me a little more info on this question Mentira means that what a person is saying is a lie or when you wanna tell someone that what somethin did happen you say "eso no paso" hope this helped.
Por mi parte, no hay problemas.
