Consider the Following to Answer the Question(s) Below

Multiple Choice

Consider the following to answer the question(s) below:
A company believes that there will be a 50% chance of making a profit of $1,000, a 30% chance of making a profit of $1500 and a 20% chance of making a profit of $2,000.
-Find the standard deviation for the company's profit?

A) $390.51
B) $152,498
C) $350
D) $18.71
E) $1,350