What is a capability of formula fields? (Choose 3)

What is a capability of formula fields? (Choose 3)
A . Generate a link using the HYPERLINK function to a specific record in a legacy system.
B . Display the previous values for a field using the PRIORVALUE function.
C . Return and display a field value from another object using the VLOOKUP function.
D . Determine if a datetime field has passed using the NOW function.
E . Determine which of three different images to display using the IF function.

Answer: A, D, E