Given below are two statements:
Statement (I):
 
 are isomeric compounds. 
Statement (II): 
 are functional group isomers.
In the light of the above statements, choose the correct answer from the options given below:
The effect of temperature on the spontaneity of reactions are represented as: Which of the following is correct?

Refining is an industrial process of reducing the impurities of a substance. In simpler terms, refining is a process of purification of metals to remove the impurities from them to obtain the metals in the purest form.
There are various methods used in the refining process of metals. They are listed below-
Check: Zone Refining