Use the Information Below to Answer the Following Question(s)

Use the information below to answer the following question(s) .
Below is a decision tree illustrating the R&D process for a new drug.

Let us assume that if the market is large, the payoff is lognormally distributed with a mean of $ 4,900 million and a standard deviation of $ 1,000 million; if the market is medium, the payoff is lognormally distributed with a mean of $2,500 million and a standard deviation of $500 million; and if the market is small, the payoff is normally distributed with a mean of $1,800 million and standard deviation of $200 million.

-What is the value of mean obtained from the simulation results? [Hint: Choose the approximate value.]

A) $ 119.0
B) $ 116.1
C) $ 105.7
D) $ 94.4