Which of the following statements are true?

(i) Unicode characters are all 16 bits.
(ii) UTF characters are all 24 bits.
(iii) Reader class has methods that can read integers and floats.
(iv) File class may be used to rename a file.
(v) DataOutputStream objects are used to write primitive data to a file.

(a) (i), (iii), (iv) and (v)

(b) (i), (iv) and (v)

(c) (i), (ii) and (iv)

(d) (ii), (iv) and (v)