इन्वेंट्री नियंत्रण की 'जस्ट-इन-टाइम' (JIT) प्रणाली का प्राथमिक उद्देश्य निम्नलिखित में से कौन सा है?

'A' group items in the ABC system of inventory control consist of:

Which term represents the optimal order size that minimizes total inventory costs (ordering cost and carrying cost)?

State whether the following statements are true or false: I. Perpetual Inventory Control System and Continuous Stock Taking are one and the same. II. Bill of Materials is an invoice received from the supplier of materials.