Cogent के विलोम का सही उत्तर कौन सा है? Which one is the correct answer to antonyms of Cogent?

Which one is the correct answer to antonyms of Cogent? Cogent के विलोम का सही उत्तर कौन सा है? Bank, SSC,CAT/MAT/XAT, MEDICAL, Railway, GRE & Other Exam (a) complaining (b) incoherent (c) unconvincing (d) bothersome (e) outspoken

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