If a firm has the following breakpoints, what order will the financing changes occur in? i.e. which source will run out

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If a firm has the following breakpoints, what order will thefinancing changes occur in? i.e. which source will run out first,second, and third? Common stock $50m Debt $75m Preferred stock $25mGroup of answer choices
debt, common stock, preferred stock
preferred stock, debt, common stock
common stock, debt, preferred stock
common stock, preferred stock, debt
preferred stock, common stock, debt
debt, preferred stock, common stock