Which of the following best explains why Northern China is sparsely populated? A. The Mekong River is in this region and it is prone to flooding

B. The Takilimakan Desert is in this region and it is a very dry place

C. The Gobi Desert is in this region and it is a very dry place

D. The Yangtze River is in this region and it is prone to flooding

Each side has to be less then the sum of the other two sides.a, b, c, and e work.

May consider a group  g=({0,1},+)g=({0,1},+)where  ++  will work as the xor operator like we work in boolean algebra. note here, that ‘00’ and ‘11’ are not the usual 0 and 1 that we work with everyday. the elements are  called  ‘00’ and ‘11’ and  may not mean  zero (nothing) and one (single). ‘00’ is the identity for the given binary operator +, meaning that any element operated with ‘00’ gets us that element itself.  for a set  ss  in  g′g′  having more elements than just  {0,1}{0,1}  the values for  a+b∈sa+b∈s, such that  a∈s,b∈sa∈s,b∈s, have to be first defined, only then can you determine the value of  1+11+1. the answer could possibly have been  22  if oanswer is25,000