In a job order costing system, the ending work-in-process inventory represents the cost of

a) all jobs started this period

b)all jobs that are not yet complete

c) all jobs finished this period

d) all jobs not yet sold

The use of a single plant-wide rate is more likely to...

c)undercost over-priced products

b) undercost low-volume, complex products

a) undercost high volume simple products

d) both (b) and (c)

Please help I am stuck on my homework!