What was the art movement that Freud most heavily influenced?

Answer Freud was heavily influenced in his early work by a group of 20th century figurative painters known as the Slade School. William Roberts and Stanley Spencer's, use of flat cubism, and distortion is evident in his work from pre 1950. His work was compared at this time to German expressionism, something he denied.:

Explanation:

all of them except "c"