Which of the following agreements was signed between Gandhi and Ambedkar that granted new rights to untouchables?

Following are the criteria for selecting a marketing officer by a company. The candidate must: (i) Be a graduate with at least 50% marks. (ii) Have secured at least 40% marks in the written test. (iii) Not be less than 24 years and not more than 29 years as on 10 December, 1996. (iv) Have work experience of at least two years as a marketing officer. In case a candidate satisfies all the other criteria EXCEPT (iv), but has a diploma in Marketing Management, his/her case is to be referred to the General Manager, Marketing. In case a candidate satisfies all the other criteria EXCEPT (iii), but has worked as a marketing officer at least for three years, his/her case is to be referred to the Director, Marketing. Arun has secured 60% and 40% marks respectively in the degree examination and in the written test. His date of birth is 17 April, 1963. He has been working in an organization as a marketing officer for the last 2 years.