ONS REMAINING Question 4 7 Points Marty is a principal who needs to contact the highest performing 20% of students in his school's current graduating class about an opportunity to join the school's academic honor society. At his school, students' grade point averages is a normally distributed variable. Marty should contact students who have a grade point average that correspond with a z- score greater than or equal to A Z = +0.84 B Z =-0.84 Z = -0.30 D Z = +0.30