XYZ, Inc. is considering a capital budgeting project under three scenarios. If conditions are excellent, the NPV of the project is projected to be $3,000; under fair conditions, the NPV is projected at $950; and under unfavorable conditions, the NPV is projected at ($600). The probabilities of these three conditions are 30%, 50% and 20%, respectively. Calculate the standard deviation rounded to the nearest whole dollar amount.
A. $1,084
B. $1,184
C. $1,284
D. $984