Which of the following is NOT one of the common exit barriers? a Select one: O a. A high return unit may provide input for low-return units so the firm may not like to quit high-return business. O b. Emotional attachment to the business may ruin if the company does not exit the business for sentimental reason O c. The cost of exit is high. The terminal benefits of redundant workers are high O d. Investment in plant and machinery has no alternative use and cannot be sold off