While punctuating a sentence it is important to capitalize the first letter of the sentence. Also, it is important to capitalize the proper nouns such as the name of a person, place or organization. In the given sentence, ‘Ram’ which is the first name of the person is a proper noun and therefore the first letter of the name should be in uppercase. Therefore option D is incorrect. Similarly, we should capitalize an all the letters in an acronym since it is formed by putting the initials of words it abbreviates together; also the acronym functions as a name. Thus, ‘IAS’ is the correct form. Therefore option A is incorrect. Further, we use a comma to set off the title or qualification from someone’s name and the clause that follows it, to avoid misreading. Therefore we need to set apart the title - ‘IAS’ in the sentence by adding a comma, before and after the acronym, to avoid misreading and confusion. Therefore option C is correct while option B is incorrect.