This question has options. Answer the question about text:

We have 4 more rehearsals til preview time and 8 songs all together . SCARY ! And tomorrow is BREATHE ! I have to work til 9 , but I plan on going afterwards and hopefully meeting up with some people and seeing them there !

What may be the reason why rehearsals are scary ?
OPTIONS: (A). None of the above choices . (B). They do n't know what they are doing . (C). They are nervous about getting enough tickets for their family . (D). They are nervous about their performance .
(D).