Wow there are so many answers, because of different versions of English. However, and in the absence of context, since the question refers to 'those', I would go for A2.
23 november 2016
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They're both correct.
23 november 2016
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Heb je je antwoorden nog steeds niet gevonden?
Schrijf je vragen op en laat de moedertaalsprekers je helpen!