Giuseppe Alessi, a world-class chef whose life has been a search for the genuine and the
delicious in Florentine cooking, is an accomplished scholar not only unearthing many of his
recipes from medieval and Renaissance manuscripts but also a poet and philosopher who draws
his inspiration from the idyllic frescoes of Etruscan tombs.
A. not only unearthing many of his recipes from medieval and Renaissance manuscripts but also a
poet and philosopher who draws
B. unearthing many of his recipes both from medieval and Renaissance manuscripts, as well as a
poet and a philosopher who draws
C. who unearths many of his recipes from medieval and Renaissance manuscripts, as well as a poet
and a philosopher who draws
D. who unearths many of his recipes from medieval and Renaissance manuscripts, but also a poet
and a philosopher drawing
E. who unearths many of his recipes from medieval and Renaissance manuscripts, a poet and
philosopher drawing

OA is [spoiler]C[/spoiler]

I just want to know that whether the use "a poet and a philosopher who draws" is right. it should be "draw" - plural. Moreover the use of "as well as"