What are the differences seen in the groups when examining the three cluster results versus four cluster results?

Cluster Analysis - Jupyter Noteb X + G C O D localhost:8889otebooks/Desktop/Cluster/Cluster Analysis.ipynb jupyter Cluster Analysis Last Checkpoint: an hour ago (autosaved) Logout File Edit View Insert Cell Kernel Widgets Help Trusted Python 3 (ipykernel) O + + |Run C > Code plt . subplot (3, 1, 2) pit. title( 'Line Plot of K-Means = 4' ) line_plot(df_rfm_normal, df_rfm_k4, rfm) pit . tight_layout ( ) Line Plot of K-Means = 3 Cluster 1.0 - N H . 0.5 - Value 0.0 - -0.5 -1.01 Recency Frequency MonetaryValue Category Line Plot of K-Means = 4 Cluster 1.0 - WNHO 0.5 - 0.0 Value -0.5 -1.0 Recency Frequency MonetaryValue Category