Frederick Sanger is a twice recipient of the Nobel Prize for

A. Chemistry in 1958 and 1980

B. Physics in 1956 and 1972

C. Chemistry in 1954 and Peace in 1962

D. Physics in 1903 and Chemistry in 1911

The ozone layer restricts

A. Visible light

B. Infrared radiation

C. X-rays and gamma rays

D. Ultraviolet radiation