Revision : option

[Goodearth100]

QUestion
2 period binomial pricing for stocks can be used to determine the value of which of the following?
a. American option
b. European option
c. Both
???

 

[S2000magician]

Both.

 

[Goodearth100]

Ths my answer too but, alas, the answer is B!!!!!
which is confusing me…
the question is why?
two period binomial model can be used to pricE American option, no?