Choose the One Alternative That Best Completes the Statement or Answers

Choose the one alternative that best completes the statement or answers the question.
-The owner of a major golf course believes that the course is so tough that most golfers rarely break par of $69 .$ The scores from a random sample of 20 golfers are listed below. Find the test statistic $x$ to test the club owner's hypothesis. Use $\alpha = 0.05$ .
$\begin{array} { l l l l l l l l l l } 68 & 66 & 69 & 69 & 72 & 71 & 63 & 75 & 69 & 74 \end{array}$
$\begin{array} { l l l l l l l l l l l } 66 & 68 & 70 & 70 & 77 & 75 & 69 & 71 & 72 & 62 \end{array}$

A) 6
B) 4
C) 14
D) 10