6. If $a > b$, then A. $\ln ( a - b ) > 0$ B. $3 ^ { a } < 3 ^ { b }$ C. $a ^ { 3 } - b ^ { 3 } > 0$ D. $| a | > | b |$
In the ancient Chinese classic ``I Ching'', the concept of ``hexagrams'' is used to describe the changes of all things. They are divided into ``yang'' represented by ``—'' and ``yin'' represented by ``- -''. The figure on the right shows a hexagram. The probability that a randomly selected hexagram has exactly five yang lines is
6. If $a > b$, then\\
A. $\ln ( a - b ) > 0$\\
B. $3 ^ { a } < 3 ^ { b }$\\
C. $a ^ { 3 } - b ^ { 3 } > 0$\\
D. $| a | > | b |$