Got exam day after tomorrow - will appreciate your help. Thanks.

Are risks with probability greater than 70% called Issues??

Sample question below says Answer is B with reason as -- "any risk that is >= 70% is not a risk any more, it is an issue. They should be entered into the issues"

Q - You are a Junior Project Manager on a large project with several other Junior Project Managers and you all report to a Senior Project Manager. You have identified many risks and entered them in the Risk Register with their corresponding impact and probabilities. The Senior Project Manager is reviewing your entries in the risk register and is expressing dissatisfaction on some of the entries that you are showing as a 70% probability of occurring with a high impact. What would best describe the reason for this dissatisfaction?
A. The Senior Project Manager needs more information to make a decision on these risks
B. These risks are issues and should be entered in the issues log
C. Such high impact risks should have been identified earlier on in the project
D. The Senior Project Manager does not agree with the viability of these