About $P$ million years ago,human-like primates walked in eastern Africa. They were probably not taller than $Q$ feet.
$Q$ is:

• A
  $3-4$ million years ago,$4$ feet
• B
  $3-4$ million years ago,$2$ feet
• C
  $2$ million years ago,$4$ feet
• D
  $2$ million years ago,$2$ feet