Assertion:Packing efficiency of body centred cubic structure is 68%
Reason:68% is the maximum packing efficiency any crystal can have

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false
D. If both assertion and reason are false

Answer

C

Explanation

fcc has 74% packing efficiency