Read this excerpt from “Sea Fever” by John Masefield. What is the rhyme scheme of the poem?

I must go down to the seas again, to the lonely sea and the sky,
And all I ask is a tall ship and a star to steer her by;
And the wheel’s kick and the wind’s song and the white sail’s shaking,
And a grey mist on the sea’s face, and a grey dawn breaking.

Options for answers are
A. abab
B. aabb
C. abba
D. abac