Evaluate: 16x 4x 9 = 0.

• A. ln [( 5 + ( sqrt{21} )) / 2] / ln 8
• B. ln [( 2 + ( sqrt{33} )) / 2] / ln 5
• C. ln [( 1 + ( sqrt{37} )) / 2] / ln 4
• D. ln [( 1 ( sqrt{37} )) / 2] / ln 3