Jailbreaking an Apple iOS device or rooting on Android devices opens opportunities that allow the user to download and install apps from a larger pool of available sources. What are the risks, if any, associated with this type of activity?

a$.$ Apps downloaded from unofficial sites will void the warranty and risk not receiving OS updates.

b$.$ It gives the user too much access and they may accidentally corrupt the OS$.$

c$.$ There are no significant risks due to the built$-$in security protections.

d$.$ Downloaded apps may contain malware that bypass the phone's security.