question: Which month in 1973 had a lowest DM modification law, November or December?
#1 return DM modification laws 
#2 return #1 in  November 1973 
#3 return #1 in  December 1973 
#4 return how low was  #2 
#5 return how low was  #3 
#6 return which is the  lowest of #4 ,  #5