A Steel Piano String Is Attached,under Tension,at Each End to Secure

Multiple Choice

A steel piano string is attached,under tension,at each end to secure posts.When gently struck,a faint note can be detected coming from the string.The string is then cooled by blowing cold air over it and then is struck again.How does the note now detected compare to the previous one.

A) It is the same since the posts don't move.
B) It is at a higher frequency than the original one.
C) It is at a lower frequency than the original one.
D) More than one answer is correct.