由条件可知，$$a=(-6)\times (-4)=24$$，$$b=(-6)\times 6=-36$$，所以  $$\frac{a}{b}=-\frac{24}{36}=-\frac{2}{3}$$．  故选$$\text{A}$$． 
从$$-6$$、$$-4$$、$$-3$$、$$-2$$、$$-1$$、$$3$$、$$6$$中选择任意两个数字，然后将它们相乘，得到的乘积的最大值为$$a$$，最小值为$$b$$，则$$\frac{a}{b}$$的值为。  Pick any two numbers from $$-6$$, $$-4$$, $$-3$$, $$-2$$, $$-1$$, $$3$$, $$6$$ and multiply them, the maximum value of the resulting product is $$a$$, and the minimum value is $$b$$, then the value of $$\frac{a}{b}$$ is ．
Options:
a. $$-\frac{2}{3}$$ 
b. $$-\frac{3}{4}$$ 
c. $$-1$$ 
d. $$\frac{2}{3}$$ 
e. $$-\frac{1}{3}$$ 