5. A. software manager is in charge of the development of a safety-critical software system which is designed to control a radiotherapy machine to treat patients suffering from cancer. This system is embedded in the machine and must run on a special-purpose processor with a fixed amount of memory(one Mbyte). The machine communicates with a patient database system to obtain the details of the patient and, after treatment, automatically records the radiation dose delivered and other treatment details in the database. Describe the cost estimation technique, COCOMO(Constructive Cost Model) for the system. (25 points)