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. Arjuna 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 Protsahan Puraskar : To recognize the contribution made by sportspersons even after their retirement How many of the above pairs are correctly matched?