あれが for "that must be it"?


I'm watching an anime where the protagonist says, according to the subtitles,
"that must be it!" But what it sounds like he's saying "あれが" instead of "あれだ".
I know I may be hearing incorrectly, but is it possible for "あれが" to be said
in a way that would translate to "That must be it"?




I think the only way for it to be `あれが` and make sense is if it's in response
to some question. Although that would be emphasizing the **_that_** in "That
must be it".

>   * 何が一番偉いものなんだ？ → What's the best/greatest one (thing)?
>   * あれが！ → That one (is)! / That must be it!
>

If you're sure the pronunciation isn't `だ`, there's a slight possibility they
could be saying `あれや！` where `や` is the Kansai-ben equivalent of `だ` and
slightly mistakable for `が` if said fast enough.




I think the only way for it to be `あれが` and make sense is if it's in response
to some question. Although that would be emphasizing the **_that_** in "That
must be it".

>   * 何が一番偉いものなんだ？ → What's the best/greatest one (thing)?
>   * あれが！ → That one (is)! / That must be it!
>

If you're sure the pronunciation isn't `だ`, there's a slight possibility they
could be saying `あれや！` where `や` is the Kansai-ben equivalent of `だ` and
slightly mistakable for `が` if said fast enough.

