Based on your understanding of the concept of cost of capital, which of the following statements are valid? Check all that apply. Companies are financed by several sources of investor-supplied capital, which are called capital components. Preferred stock is not taken into account when considering the costs related to investor-supplied capital. Companies often finance their new projects with capital that comes from retained earnings. This also constitutes investor-supplied capital. Short-term debt such as accounts payable or short-term loans are not considered capital components