Which javaScrip concatenates eVar2:prop2 inot prop1?

What are advantages of using a custom eVar over a custom sprop? Select two.

A visitor interacting with your website on 3 visits using the same device and web browser. The source query string parameter is captured into eVar5 Visit #1.
The visitor came to the website by clicking on Facebook ad with the query string parameter source=xyz 123 set in the URL During this visit the added a quantity of one of product 123ABC with a cost of $99.99 to their cart. Later they filed out a contact from on the site that resulted in success event being set Visitor2 The visitor returnee to the website by clicking a link containing source=em567 that they received in their email. During this visit they added two of a second product to their shopping cart of %JU#555AAA with an individual cost of $50.00.
They returned to the website by typing the URL of the website homepage directly into the address bar and completed the porches for both items Which additional pieces of information would you need to determine the value attributed to eVars at the one of purchase? Select three.

Assume a customer prop and custom eVar were implemented to capture the from named of various forms that were filled out and successfully submitted.
If you want to see the order in which forms are completed on the site, which variable would be most help?

Use the two sequential request to answer the question below.

Assume custom eVar persist throughout the visit
What conclusion you draw from the sequential image request above? Select two.