The blue line line is the stochastic divergence for the Point A to B. In that the stochastic went to align with the price and couldn't keep it down .
So , Now we have another stochastic divergence from point A to C and looking to break that structure because of the previous push from the downside.
So , Now we have another stochastic divergence from point A to C and looking to break that structure because of the previous push from the downside.