# Assessment 1

#### What does OP\_DEPTH return when executed on a stack containing 5 items?

* [ ] 4 (counting from zero)
* [x] 5 (total count)
* [ ] 6 (including OP\_DEPTH's output)
* [ ] An error (invalid operation)

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**Notes to Learners**\
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OP\_DEPTH counts the items present *before* it executes and adds that count to the stack. It measures the existing state, not the state after its own execution.


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