Use Graphs to Locate Relative Maxima or Minima
the Graph $f$

Multiple Choice

Use Graphs to Locate Relative Maxima or Minima
The graph of a function f is given. Use the graph to answer the question.
-Find the numbers, if any, at which f has a relative maximum. What are the relative maxima?

A) $f$ has a relative maximum at $x = 0$ ; the relative maximum is 1
B) $f$ has a relative maximum at $x = - 1$ and 1 ; the relative maximum is 0
C) f has a relative maximum at $x = 1$ ; the relative maximum is 1
D) f has no relative maximum