A major appliance manufacturer that has been purchasing electronic controls from a supplier makes the decision to design and develop the controls$$ in$-$house. From the$$ supplier's perspective, which of$$ Porter's five competitive forces does this$$ represent? Question content area bottom Part $1$ A$.$ Threat of new entrants B$.$ Current rivalry C$.$ Threat of substitutes D$.$ Bargaining power of buyers E$.$ Bargaining power of suppliers