If 10a = 6b = 20, then 120ab =	Choose the correct choice from the following.
A) 800  B) 1000  C) 1200  D) 1400  E) 1600
10a * 6b = 20 * 20= 
<gadget id="calculator">20 * 20</gadget>
<output>400</output>
400   60 ab= 400   i.e. 120 ab = 800   800nswer: Option 800
<result>A</result>
If 10a = 6b = 20, then 120ab =