Sound Travels at 340 M/s in Air and 1500 M/s

Multiple Choice

Sound travels at 340 m/s in air and 1500 m/s in water.A sound of 256 Hz is made under water.In the air,

A) the frequency remains the same but the wavelength is shorter.
B) the frequency is higher but the wavelength stays the same.
C) the frequency is lower but the wavelength is longer.
D) the frequency is lower and the wavelength is shorter.
E) both the frequency and the wavelength remain the same.