scenario 1

Corrective Wave: FLAT
Rules:

All flats consist of 3 waves ( ABC )
Wave A and B must subdivide into any corrective pattern, but Wave A cannot be a triangle
Wave C must be a motive wave (i.e impulse or diagonal)
Wave B must retrace wave A by at least 90%
Guidelines:

The structure is called an ‘Expanding” Flat if Wave B retraces between 105% – 138% of wave A, and Wave C ends anywhere beyond the end of wave A. Expanding Flats occur most commonly.
The structure is called a ‘Regular‘ Flat, if wave B retraces between 90 %- 105% of wave A, and the size of wave C is 100% – 105% of wave A. Regular Flats are more rare.
The structure is called a ‘Running’ Flat if Wave B ends beyond the start of wave A, but wave C fails to reach beyond the end of wave A. Running Flats are very rare and alternative wave counts should therefore always be considered before labeling anything as a running flat, especially on larger scales.
Whenever an impulse (trend) ends in what looks like a 3-wave swing and then reverse sharply, be mindful that it could be an expanding flat and that the old trend direction may resume suddenly.
Elliott Wave with Fibonacci Retracement and Extension Guidelines:

Refer to image for main retracement and extension targets.
Wave C is usually 100% – 161.8% x Wave A in size, but it is possible that it becomes as big as 261.8% on rare occasions. Sometimes the target for wave C can also be gauged by using the start of Wave A as the base for the 161.8% extension target (instead of using the start of wave C as the base). This method creates a slightly different price level and broadens the target area a little.