please help me answer the following by citing the appropriate articles from law on sales. 1. Hershey and HimHi were co-owners of a parcel of land. Last January 31, 2001, when she paid her real estate tax, Hershey discovered that Himhi has sold her share to Himhi on November 10, 2000. The following day, Hershey offered to redeem her share from Himhi, but the latter replied saying that Hersheys right to redeem has already prescribed. Is Himhi correct or not? Why?

2. Alyssa owes Bernard. Bernard assigns the credit to Calli. Bernard is in good faith. It was agreed that Bernard would be responsible for Alyssa's solvency. The parties did not agree on the duration of the liability. If the debt was due July 6, 2019 and the assignment was made August 8, 2019. Until when is the guaranty?

3. Dimunyu borrowed P30,000 from Cendra. To secure the debt, Dimunyu pledged his ring, wristwatch, and necklace. Before the debt could be paid, Cendra died leaving Xeryna, Yale and Zeinab as heirs. By agreement among the heirs who inherited the credit, the ring would secure the share of Xeryna of the credit, the wristwatch the share of Yale, a necklace the share of Zeinab. Later, Dimunyu pays Xeryna P10,000.00. Can Dimunyu demand the extinguishment of the pledge of the ring?

Please help me. Thank you in advance.

Philippine business law