Haydn's $94$th symphony earned the nickname "The Surprise Symphony." Why so$?$

Multiple Choice

No one in Vienna expected him to produce a $94$th symphony after announcing his retirement

following the $93$rd symphony.

During the last movement, the entire orchestra slowly leaves the stage $($two performers at a

time$)$ until a single violinist concludes the entire work.

The second movement begins with a simple and quiet melody. Soon, though, an incredibly loud

note is played by the entire orchestra at an unexpected moment.

The symphony had false endings. No one could predict when the work actually finished $($so

they were "surprised" when the music came to a true close$).$