Consider the following pairs with regard to sports awards:
1. Major Dhyan Chand Khel Ratna Award : For the most Spectacular and outstanding performance by a sportsperson over period of last four years
2. Arujna Award : For the lifetime achievement by a sportsperson
3. Dronacharya Award : To honour eminent coaches who have successfully trained sportspersons or teams
4. Rashtriya Khel Protshan Puraskar : To recognize the contribution made by sportspersons even after their retirement
How many of the above pairs are correctly matched?