Selecting an answer

Ok here's a brain-teaser type question. It's multiple choice. Enjoy :)

options = {'A','B','C','D};
myAnswer = options{randi(4)};

Now, what is the chance of "myAnswer" being correct for A,B,C,D below?

A) 25%

B) 50%

C) 60%

D) 25%

... and should I get the Statistics Toolbox to help me? :)

[Walter Roberson]

Cute ;-)

[Jan]

What do the percentage numbers mean? What is the qualitative difference between A) and D)?

[Sven]

Sorry Jan, just a puzzle I found - no further info available. I tried thinking it through as a last resort (thinking should always be a last resort)... but met some difficulty.

[Andrei Bobrov]

options{randi(4)} - 25% 25% 25% 25%

[Sven]

This video may help:

http://www.youtube.com/watch?feature=player_embedded&v=evKYF1G_uDI

Answer 1

[LY Cao]

B, have any questions？

[Sven]

hehe... please show your working? ;)