what type of formula do I use for this, "In cell E12, add an IF statement using a nested OR function that will return any notes associated with the issue. If there are more than 10 issues reported with a grade below a C in cell D12, or when the number of scores less than C divided by the total calls in cell C12 is greater than 50%, then "Explore Issues" should display. Otherwise, the result will be blank. Copy the formulas in B12:E12 down through row B16:E16."