Please help me understand the right answer to this question.

Which of the following correctly states the Constitutional requirement for when one offense must be included within another?

Group of answer choices

a.An attempt to commit a crime is always included within a charge of the completed crime.

b. All lesser forms of criminal homicide are included in any more serious homicide crime.

c. A less serious crime that does not require proof of any additional elements beyond those required to prove the charged crime is always included in the charged crime.

d. All of the these.