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Assume that Margy became the new registered proprietor of the fee simple estate in Land Z. Margy's new indefeasible title will extinguish which (if any) of the following interests in Land 2... O a. Alex's prior unregistered lease for 4 years, which includes an option to renew for another 5 years (the option to renew is protected by a caveat) O b. Margy's indefeasible title will not extinguish any of the other three options 0 c. Alex's prior unregistered lease for 7 years, which includes an option to renew for another 5 years 0 d. Alex's prior registered lease for 6 years