The correct answer is D. Only I and II follow.
The statement says that the answer papers of Board examination of one State are evaluated by students studying in the same standard with the help of model answers as instructed by the examiners. This is a serious breach of the examination process and needs to be investigated and the guilty punished.
Course of action I says that all such examiners should be immediately suspended from their official positions. This is a fair and necessary course of action as the examiners have clearly violated the rules and regulations of the examination.
Course of action II says that all such papers evaluated by the students should be immediately confiscated and got evaluated by qualified teachers. This is also a fair and necessary course of action as the papers evaluated by the students may not be accurate or reliable.
Course of action III says that the Board should explore possibilities even though they are remote, of getting the answer papers of this examination evaluated by computerised machines. This is a good suggestion, but it is not a necessary course of action. The Board can take other steps to ensure the accuracy and reliability of the examination, such as training the examiners better and using better quality answer sheets.
Therefore, only courses of action I and II follow.