Which of the Following Three Statements Is/are Correct

Multiple Choice

Which of the following three statements is/are correct?
I. Speciation through polyploidy can occur through hybridization.
II. Speciation through polyploidy never occurs in vertebrates; it occurs only in plants.
III. Speciation through polyploidy generates phenotypic differences among the resulting species.

A) I only
B) II only
C) III only
D) I and II
E) I and III