Sorry to take so ling to get this posted, but here it is.
In this clue, we are going to start some block assembly. So, there is no difference in the instructions for choice A and choice B. The only difference is that choice A will be making 20 blocks, and choice B will make 30 blocks.
You will need to dig out the Unit C (6 1/2" pieced squares) and your strip pieces of Unit D and Unit E from the last clue. Keep them separated.
Next sew a Unit E to the top and bottom of your block. Press out towards the border. This is now called Unit F!!