In the following sentence, a part of the sentence is underlined. Below are given alternatives to the underlined part, which may improve the sentence. Choose the correct alternative. In case no improvement is needed, choose the option that indicates 'No improvement'.

Guernica, probably Picasso's most famous work, is certainly his very powerful political statement, painted as an immediate reaction to the Nazi's devastating casual bombing practice on the Basque town of Guernica during the Spanish Civil War.

A. More powerful political statement

B. Most powerful political statement

C. Almost powerful political statement

D. Even powerful political statement