X is twice of Y and Y is half of Z. Find the value of Z

• A. \[{{24}^{{}^\circ }}\]                     
• B.        \[{{48}^{{}^\circ }}\]
• C. \[{{72}^{{}^\circ }}\]    
• D.        \[{{96}^{{}^\circ }}\]
• E. None of these