Doubt in compiler

Question

Whether a given pattern constitutes a token or not
(a) depends on the source language
(b) depends on the target language
(c) depends on the compiler
(d) none of the above comment is true

Comments

I think it depends upon how the FA Automata is constructed for lexical phase of compiler to accept the pattern or not so it will be depending upon the compiler

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as per my knowledge

given pattern constitutes a token or not

depends upon the source language.

if the pattern is in source language, then it should constitute a token, otherwise why that pattern exist?

Compiler ( Specific to a language ) should be implement all patterns ( in that source language )

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It depends on the programmer - how he's defined the tokens.

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@goxul

every token should have a pattern.