Which of the following sets is not a natural | vedclass

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(B) Plant growth regulators (PGRs) are organic compounds that influence the growth and development of plants. $IAA$ (Indole$-3-$acetic acid) and $2IP$

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$IAA, 2IP, Zn$

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(B) Plant growth regulators (PGRs) are organic compounds that influence the growth and development of plants. $IAA$ (Indole$-3-$acetic acid) and $2IP$ ($2$-isopentenyl adenine) are natural plant hormones. $GA_{3}$ (Gibberellic acid),$ABA$ (Abscisic acid),and $IBA$ (Indole$-3-$butyric acid) are also recognized as plant growth regulators. Zinc $(Zn)$ is an essential micronutrient required for plant metabolism and enzyme activation,but it is not classified as a plant growth regulator or hormone. Therefore,the set containing $Zn$ is not a set of plant growth regulators.

Which of the following sets is not a natural plant growth regulator?

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