What must be done first in order to visualize log data that has been captured by the ELK stuck included IBM Cloud Private?

What must be done first in order to visualize log data that has been captured by the ELK stuck included IBM Cloud Private?
A . Create a search or select a saved search
B . Use the Discover panel to graph the data that to be visualized
C . Define the buckets that the data from selected logs will be grouped into
D . Choose an existing dashboard or create an new dashboard to hold the visualized data

Answer: C