What is the primary purpose of trickle timers in RPL?
A . Trickle timers control the frequency of DIO update messages towards the root of the DODAG tree
B . Trickle timers are used to refresh the Latency object every 15 seconds
C . Trickle timers control the frequency of DAO-ACK messages towards the root of the DODAG tree
D . Trickle timers are used to suppress redundant messages.
Answer: A