You are given the data frames DF1, DF2, and DF3. What will be the shape of DF3 (i.e., DF3.shape)? Al AZ ID Low -0.017581 99 Low 0.020453 100 DF1= High -0.003841 101 High 0.005890 102 High 0.023310 103 A4 DF2- A3 A5 Label ID 21.525622 -4.808663 Sunny -0.553596 103 17.557467 -4.881723 Cloudy 2.500840 104 22.097842 -4.944306 Cloudy 0.373659 105 20.912005 -5.295043 Rainy -0.607677 106 19.895353-5.306380 Sunny -0.300517 107 DF3 = DF1. merge (DF2, on='ID', how="inner')