Assertion : The packing efficiency is maximum for the fcc structure.

In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices. 

(i) Assertion and reason both are correct statements and reason is correct explanation for assertion. 

(ii) Assertion and reason both are correct statements but reason is not correct explanation for assertion. 

(iii) Assertion is correct statement but reason is wrong statement. 

(iv) Assertion is wrong statement but reason is correct statement.

Assertion : The packing efficiency is maximum for the fcc structure.

Reason : The cordination number is 12 in fcc structures.