Write a single SAS step that will use the Covid permanent data set as input and create three data sets as described in more detail below. Everything in this step must be done as efficiently as possible based on the information you have available.

a. Use a conditional statement that will write out a blue note and the contents of the PDV before the set statement on only the first two iterations of the data step. The message in the note should read PDV Before Set Statement.

*don't do the whole problem, just the code for part a please*