Given decision tree below with payoffs are profits. s1 and s2 are two states of nature P(s2)=0.57

Instruction: Use the following information to answer questions 19 to 21 Given decision tree below with payoffs are profits. s1 and s2 are two states of nature. P(s2)=0.57 19) What is the expected monetary value (EMV) at node A? A. $7,600 B. $9,600 C. $2,988 D. $3,000 E. None of the answers provided is correct 20) What is the expected monetary value (EMV) at node B? A. $3,400 B. $4,800 C. $3,900 D. $3,000 E. None of the answers provided is correct 21) The expected value at node C is A. $2,988 B. $4,800 C. $3,900 D. $3,000 E. None of the answers provided is correct 22) Decision troes are particularly useful when A perfect information is available: B. formulating a conditional values table. C. the opportunity loss table is available. D. a sequence of decisions must be made E. all possible outeomes and alietnatives ate not known