please help me understand this question and show me the formula so i can learn it correctly.

Sketch the graph of the following function . Describe how the graph can be obtained from the graph of the basic exponential function ex ( ( X ) = = ( 2 - e X ) Q Click to enlarge 10 - 8 6 4 4 6 8 10 graph Describe how the graph can be obtained from the graph of the exponential function ex . Choose the correct answer below A . Reflect the graph of y = ex across the y - axis , shift it up and shrink it vertically O B . Reflect the graph of y = ex across the X - axis , shift it up and shrink it vertically O C . Reflect the graph of y = ex across the x - axis , shift it down and shrink it vertically