Suppose the U. S. economy is operating at potential output. A negative supply shock (an increase in ill-advised regulations) will cause in real GDP and in the aggregate price level in the long run, everything else held constant. no change; no change a decrease; an increase no change; a decrease an increase; an increase

For a firm that uses the weighted average method of process costing, which of the following must be true? (a) physical units can be greater than or less than equivalent units. (b) physical units must be equal to equivalent units. (c) equivalent units must be greater than or equal to physical units. (d) physical units must be greater than or equal to equivalent units.