As a project manager, John has implemented risk response plan and utilized all of the appropriate tools & techniques and executed the preventive and contingency actions to respond to identified project risks. Now few months after executing of risk management plan, he finds out that some of the risks have been reduced in impact but still remain as potential threats (with not that a big impact). Steve decides to develop additional contingency and fullback plans for these risks. These risks are called: a) Secondary risk b) Residual risks c) Primary risks d) Workarounds