What are the factors of \[{{x}^{8}}-{{x}^{4}}-30\,\,?\]

• A. \[({{x}^{4}}-6)\]and \[({{x}^{4}}-5)\]           
• B. \[({{x}^{4}}-6)\] and \[({{x}^{4}}+5)\]
• C. \[({{x}^{4}}+6)\] and \[({{x}^{4}}-5)\]           
• D. \[({{x}^{4}}+6)\]and \[({{x}^{4}}+5)\]