help me pls

5 bod X is a non- collable corporate bond mahering in to years Rond y is also a corporate bond madering in w years. But Bondy is callable at any time beginning 3 years from now. Both bonde carry a credit rating og an. Based on this informohon A. The obbo ophion adjusted sea apread of Bond I will be greater than its zero- volatility spread. B. Rond y will have a higher higher zero - volatility spread than Bond x. C. The zero- volatility spread of Bond x will be greater than its ophon-adjustead spread