Block Difficulty

Multiple Choice

Block Difficulty:

A) is determined by the Ethereum Committee every fortnight to reflect the average amount of transaction and it cannot be influenced by the network itself.
B) increases when the time between mined blocks is below 10 seconds, while it decreases when the time is above 20 seconds.
C) increases when the time between mined blocks is below 20 seconds, while it decreases when the time is above 60 seconds.