Hi,
You can do this:
row_nums = data << Get Rows Where( Num( data:"Donor" ) == i & data:"A or B" == "A" );
Write( data[row_nums, 0] );
Once you have the row numbers you need in row_nums, you can index the table (which I presumed is named data) directly using the syntax table[row,col]. In your case, row_nums are the rows you want, and 0 means to get all columns.
Cheers,
Brady