Java Programming

i have a scjp question which iam finding conflicting answers..can anyone help me...The question in the book goes...

Given that b and c refer to instances of wrapper classes, which two statements are
true? (Choose two)
A. b.equals(b) returns true.
B. b.equals(c) returns the same result as b == c.
C. b.eqials(c) can return false even if c.equals(b) returns true.
D. b.equals(c) throws an exception if b and c are different wrapper types.
E. b.equals(c) returns false if the type of wrapper objects being compared are
different.
Answer: B, C(acc.to the book)

B i can understand but how can C..I think it is E..Anyone plz help me..