A.As a string ending with a comma

B.As a list< String > with one element

C.As a string

D.As a set< string > with one element

A.The Account should have a Master-Detail relationship to the Invoice.

B.The Invoice should have a Lookup relationship to the Account Previous

C.The Account should have a Lookup relationship to the Invoice

D.The Invoice should have a Master-Detail relationship to the Account

A.Controller

B.Override

C.Standardcontroller

D.Pagereference

A.Controller Extension

B.List Controller

C.Standard Controller

D.Custom Controller

A.Determine which of three different images to display using the IF function.

B.Determine if a datetime field has passed using the NOW function.

C.Display the previous values for a field using the PRIORVALUE function.

D.Generate a link using the HYPERLINK function to a specific record in a legacy system.

E.Return and display a field value from another object using the VLOOKUP function.