Punctuate the following sentence correctly using commas, semicolons, or colons.

Walking jogging and aerobics are excellent exercises for the cardiovascular system.

A. Walking jogging and aerobics; are excellent exercises for the cardiovascular system.

B. Walking, jogging, and aerobics are excellent exercises for the cardiovascular system.

C. Walking, jogging, and aerobics, are excellent exercises for the cardiovascular system.

D. Walking, jogging, and aerobics; are excellent exercises for the cardiovascular system.