Taking a look at the D point of this , you can see that there's a lot of confluence there.
1. the .618 retrace of the previous uptrend
2. of course, the 1.618 XA extension of the
2. The 3.618 extreme extension of the BC leg
4. and also there is a minor SR structure
These are not only good confluence to suggest there will be a reaction when prices reach that point, but also because such confluence tends to act like a magnet drawing prices to it. So whether you will wait til the completes or try to go short on the completion of the CD leg, the R:R is good.