Which statement best reflects Daniel Sumner's opinion on the proposition's effect on the pork industry outside California?

a$.$ The regulations will drastically increase pork prices nationwide.

b$.$ The regulations are restricted mainly to California and won't significantly affect prices in markets outside the state.

c$.$ Pork production will shift predominantly to the Midwest and East Coast.

d$.$ There will be a significant shortage of pork in the U$.$S$.$ due to the regulations.