Minimal normal implies pi-group or pi'-group in pi-separable group

From Groupprops

Statement

Suppose π is a set of primes and G is a finite group that is π-separable (see Pi-separable group (?)). Suppose H is a Minimal normal subgroup (?) of G. Then, H is either a π-group (i.e., all prime factors of the order of H are in π) or a π-group (i.e., none of the prime factors of the order of H are in π).

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