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# Which of the following is a triphenylmethane dye ?

$(a)\;Alizarin\qquad(b)\;Indigo\qquad(c)\;Aniline\;yellow\qquad(d)\;Malachite\;green$

Explanation :
Malachite green is a triphenylmethane dye . As the name suggests , these dyes contain a triphenytmethane group in their molecules .