Which of the following statements is true?

In a process costing system, costs are traced directly to jobs.

In a process costing system, overhead is allocated to departments after being applied to units of product.

In a process costing system, manufacturing overhead cost is also called conversion cost.

Multiple Choice

Statements $1$ and $3$ are true.

Statements $2$ and $3$ are true.

All of the statements are true.

None of the statements are true.