Exam AD0-E103 topic 1 question 41 discussion

A developer creates the following code snippet to implement a simple polling importer to fetch stock prices from an external source:

The polling importer needs to fetch stock prices for a specific stock symbol and needs to be triggered every 5 minutes.
Which node structure should the developer create in CRX to make sure that the code shown is executed successfully?
A.

B.

C.

D.