Bitcoin has rebounded to near $89,000, showing renewed strength with a nearly 3% rise as broader market sentiment improves, potentially indicating a delayed 'Santa Rally.' Analysts note that significant crypto options expiries today might cause sideways volatility until they conclude. Key support is seen at $87,000, with resistance at $89,000, and a break above $89,700 could signal a rally towards $100,000. Other cryptocurrencies like Ethereum and Solana also experienced mixed movements.