Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$: Steel is used in the construction of buildings and bridges.
Reason $R$: Steel is more elastic and its elastic limit is high.
In the light of the above statements,choose the most appropriate answer from the options given below:

• A
  Both $A$ and $R$ are correct but $R$ is $NOT$ the correct explanation of $A$.
• B
  $A$ is not correct but $R$ is correct.
• C
  Both $A$ and $R$ are correct and $R$ is the correct explanation of $A$.
• D
  $A$ is correct but $R$ is not correct.