What Is Suggested by the Fact That Type II Restriction

Multiple Choice

What is suggested by the fact that type II restriction endonuclease recognition sequences are usually palindromic?

A) A particular restriction endonuclease can cleave DNA at several different sites.
B) Restriction endonucleases must cleave DNA in a multistep process.
C) Restriction endonucleases function as dimers.
D) Restriction endonucleases recognize the sugar-phosphate backbone of DNA.