Which of the following sentences are TRUE?

i. 

Transferred-in costs are incurred in

previous departments and are carried forward to subsequent departments

ii. 

Transferred-in costs are conversion

costs added at the beginning of the process

iii. 

Transferred-in costs are costs of

beginning inventory added at the beginning of the process

iv. 

Transferred-in costs are treated as a

separate direct material added at the beginning of the process