Classify the following activities into 5 levels: Unit-level (U), Batch-level (B), Product-level (P), Customer-level (C) and organization-sustaining (05) activities. _ Receiving raw materials from suppliers _ Moving materials from the warehouse to production lines _ Designing new products (done by product engineers) Inspecting completed units for quality control (every unit is examined) Inspecting completed units for quality control (sampling) _ Assembling products (done by assembly workers) _ _ _ _ Interview and process new employees in the HR department