A solar panel production factory is located in an area subject to occasional flooding. You have been brought in as a consultant to determine whether flood-proofing of the building is economically justified. The alternatives are as follows: - Option A. Do nothing. Damage in a moderate flood is $10,000 and in a severe flood, $25,000; - Option B. Install the stormwater pump at a cost of $15,000 to withstand moderate flooding without damage and to withstand severe flooding with $10,000 damages; - Option C. Install the stormwater pump and upgrade the sewage system at a cost of $30,000 to withstand a severe flood without damage; In any year, the chance of no flooding is 0.22 and the chance of moderate flooding is 0.45. What is the expected cost of option B