(b) i. Farmer Hafiz must decide whether to plant sweet potatoes or vegetables. If he planted sweet potatoes and the weather is warm, he earned RM9000, and the weather is wet, he earns RM6000. If he planted vegetables, and weather is warm, he earned RM12000 and if the weather is wet he earned RM4000. In the past, 60 percent of all years have been warm and 40% have been wet. Develop decision tree for this problem. (5 marks) ii. Analyze the decision tree to determine the expected monetary value (EMV). (5 marks) ii. Determine the best decision that Hafiz should do to maximize his expected earnings