Which equation is an example of the commutative property of multiplication?

The commutative property of multiplication says that changing the order of the factors does not change their product: ab = ba. Choice B switches the order of the two complex-number factors, (4 + 2i) and (3 − 5i), while keeping the product equal. Choice C instead illustrates the multiplicative identity, since multiplying by 1 does not change a value.

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