A trader mixes 26kg of rice at TK. 20 per kg with 30kg of rice of bother variety at tk. 36 per kg and sells the mixture at tk. 30 per kg.His profit is :

`A herd of cattle is passing` The underlined word is a/an- Option A: adverb , Option B: adjective , Option C: collective noun, Option D: abstract noun, correct answer is: collective noun

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