What is the correct syntax for a Logger component to output a message with the contents of a 3SON Object payload?

What is the correct syntax for a Logger component to output a message with the contents of a 3SON Object payload?
A . The payload is: $(payload)
B . #["The payload is: " ++ payload]
C . The payload is: #[payload]
D . #["The payload is: " + payload]

View Answer

Answer: B