Which of the following statement is correct? 

1. PQLI was invented by M.D. Morris in the year 1979. 

2. The Physical Quality of Life Index (PQLI) manifests enhancements in living standards, marked by increased longevity, reduced infant mortality, and elevated basic literacy rates, all of which underscore the benefits of economic progress.

3. Each component of the Physical Quality of Life Index (PQLI)—longevity, infant mortality, and basic literacy—is evaluated on a spectrum from zero to 100, where zero signifies the utmost unfavourable outcome and 100 epitomizes the pinnacle of success.