The ubiquitous "Whazzup!" is a sloppy pronunciation of "What's up?" The spectrograms of each of these two spoken phrases would indicate__________.
a. no difference in the spectrograms between the two phrases.
b. only a difference in the frequency axis between the two phrases.
c. that there is a pause in the middle of "What's up?".
d. major differences between the two, especially in the middle of the spectrograms.