A In recent years, life expectancy has clearly increased in an even way all over the world.
B Global life expectancy has improved substantially with  no  noticeable  differences  when  countries  are  compared.
C There has been an increase in life expectancy recently;  however,  it  remains  unclear  whether  it  has  been  significant or not.
D Because of large disparities across countries, it has not  been  possible  to  measure  global  life  expectancy  in  recent years.
E Despite considerable differences across countries, life expectancy has significantly risen worldwide in recent years.