Understanding Modigliani-Miller Proposition on Capital Structure

ABC Corporation is considering its capital structure options in the context of the Modigliani-Miller propositions. According to the Modigliani-Miller theorem, in a perfect market with no taxes or bankruptcy costs, the value of a firm is unaffected by its capital structure. This means that whether a firm is financed by debt or equity will not influence its total value.

Given this understanding, what can be said about the impact of capital structure changes on the firm's overall value?