Which of the following activities pertain to a master production schedule. 1. Sizing and timing of specific items, production lot 2. Sequencing of individual orders of jobs 3. Short term allocation of resources to individual operations 4. Product design Select the correct answer using the code giver below:

• A. 1, 2 and 4                     
• B. 2, 3 and 4
• C. 1, 3 and 4                     
• D. 1, 2 and 3.