Context: They 're sitting knee to knee straddling it with sandwiches and chips set between the diamond their legs form . They look like a set of mismatched bookends that somehow manage to keep everything on the shelf . She is in her expensive suit with the blazer draped behind her neatly on the bench . He sits with his rumpled button down shirt open to the third button revealing the top of a brightly colored tee and his lab coat looking like a casualty of being balled up and tossed on the bench . He smiles and laughs at something she says and her eyes light up in response .

Question: What 's a possible reason she is in her expensive suit ?
Options:
0. Because they look like a set of mismatched bookends .
1. Because they 're sitting knee to knee .
2. None of the above choices .
3. Because they have sandwiches and chips set between the diamond .
Answer: 2