can i have the answer for part b and c please?

Q3. Bioceramic is a biocompatible ceramic, which is used in the human body to replace the function of bone. a) Correlate two factors that may cause bioceramic bone scaffold failure and suggest one material for each factor to improve the properties of bone scaffold in order to avoid the failures. b) Analyze the X-ray diffractometer (XRD) spectra of two types of bioceramic in Figure 5 in terms of its materials, crystallinity and dissolvability. c) In-vitro simulated body fluid (SBF) test is one of the bioactivity tests to measure the ability of bioceramic to induce bone integration through the formation of apatite layer. i) Elaborate the mechanism of apatite layer formation if the bioceramic materials are bioactive. ii) Discuss the physiological phenomena which interrupt the formation of apatite layer following bone scaffold implantation