See the question below:

Question 5(15 merits): One of the following statements is E correct: {a} The standard volumes of materials can be obtained from a bill of materials. {b} Standard prices should be the most competitive prices after taking into consideration the quality of the materials. (c) Standard direct labour time is obtained from 'time and motion" studies. {d} The standard overhead cost is obtained by multiplying a standard overhead rate by the actual volume [for example actual direct labour hours]. Annular