Assertion : A metal piece and a non-metal (stone) piece are dropped from the same height near earth?s surface. Both will reach the earth?s surface simultaneously. Reason : There is no effect of earth?s magnetic field on freely falling body.

• A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
• B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
• C. \[1.8\times {{10}^{-5}}m\]
• D. If the assertion and reason both are false.
• E. If assertion is false but reason is true.