Dear Trapti,
I don't know what the correct answer is, but if I have to pick one then I wanna go with ur answer just becos its explanation is quite justified.
But this has given rise to another doubt ...........:(
Say an assesee practices something like CA, CS, CWA doctor, lawyer or anything.
Now, can he contend that he does this out of passion /hobby /pleasure & profit earning is never a motive & it is just an incidental thing that happens on its own. {Say this assesee accepts whatever fee his clients pay to him just like the priest in the above example}