Spin a surprise

This task is about how likely things are to happen.
Sharni spins the arrow to see if she wins a prize at her school gala.
 
a) i)
Which of these is true? (circle one)
 
    (A) 
Sharni is more likely to win a sweet than a muffin.
    (B)
Sharni is more likely to win a muffin than a sweet.
   
(C)
 
Sharni is just as likely to win a muffin as a sweet.
 
  ii)
Explain your answer.
 
 
 
 
 
 
 
b) i)
Tana has a spin. Which of these is most likely? (circle one)
 
    (A)  Tana wins a prize.
    (B) Tana does not win a prize.
   
(C)
Tana is just as likely to win a prize as he is to not win one.
 
  ii)
Explain your answer.