A tuning fork sounds louder when its stem is pressed against a table top than when held in air because?

A. a larger mass of air is set vibrating by the table top
B. the whole table vibrates in resonance
C. the whole table has acquired a larger frequency
D. the fork and table have the same frequency
E. the amplitude of the vibrating fork is increased.

Correct Answer:

Option C – the whole table has acquired a larger frequency