I made the mistake of picking option A.
A reason why option A is weaker as compared to option C is option A does not define a timeline of Sympal's re-investment policy in R&D. It does not specify in option A the point in time in the past 8 years (or before that) when Sympal start investing 50% of its profit in R&D (considering Sympal became profitable 3 years back, it could not have invested anything prior to that - so investing in R&D was not the reason behind it turning profitable.
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A reason why option A is weaker as compared to option C is option A does not define a timeline of Sympal's re-investment policy in R&D. It does not specify in option A the point in time in the past 8 years (or before that) when Sympal start investing 50% of its profit in R&D (considering Sympal became profitable 3 years back, it could not have invested anything prior to that - so investing in R&D was not the reason behind it turning profitable.
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