Which of the following are valid problem states? (Choose all that apply.)

A developer is writing a Visualforce page that queries accounts in the system and presents a data table with the results. The users want to be able to filter the results based on up to five fields. However, the users want to pick the five fields to use as filter fields when they run the page.
Which feature of Apex code is required to facilitate this solution?

Which of the following fields does ServiceNow recommend to move to the Advance view of the catalog item form? (Choose two.)

You can create only one change request from an incident.

It is recommended to refer to problem states using the values rather than the constants.