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2. [20] The current state of IIT Jammu is given as 3C,2H,0R,3L> where C,H,R, and L represents Classroom, Hostel, Residence and Laboratory entities respectively. Using an informed search approach, find the fastest and economic solution to achieve the goal state 6C,3H,1R,6L. At any stage, you are allowed to schedule exactly two activities. An activity is termed as the construction of an entity. The cost of constructing each entity is given in the following Table 1 . Choose between the following two heuristics to achieve the efficient solution: i) The difference between the cost of goal state and the current state. ii) The difference between the number of entities in the goal state and the current state