Joe Has a Big English Exam Coming Up Next Week

Joe has a big English exam coming up next week.Will it help him if he visualises himself doing really well in the the exam? What about if he visualises himself studying really hard for the exam?

A) Neither of these things will help him.
B) Both of these things will help him about equally.
C) Both of these things will help him - but visualising himself doing well in the exam (the true end goal) will help more than visualising himself studying really hard.
D) Both of these things will help him - but visualising himself studying really hard (which will likely lead to him actually studying harder) will help more than visualising himself doing well in the exam.