What is the meaning of the word "lamentable" as it is used in this
sentence from Winston Churchill's Address to Parliament?

I will say: It is to wage war, by sea, land and air, with all our might and
with all the strength that God can give us; to wage war against a
monstrous tyranny, never surpassed in the dark and lamentable
catalogue of human crime.

A) celebratory
B) cowardly
C) regrettable
D) satisfactory