Let f(x) = 2e - x+ 1

(a) Which describes how the graph of f can be obtained from the graph of y = ex ?

Choice: ________

A.Shift the graph ofy = e xto the left by 1 unit and shift upward by 1 unit.

B.Shift the graph ofy = e xto the right by 1 unit, stretch vertically by a factor of 2,andshift upward by 1 unit.

C.Reflect the graph of y = e x across the x-axis, stretch vertically by a factor of 2,and shift upward by 1 unit.

D.Reflect the graph of y = e x across the y-axis, stretch vertically by a factor of 2,and shift by 1 unit.