I think its all of the above
The answer is...
B. Buffers
No, a long as a dairy cow has been pregnant once, the cow will continue producing milk as long as it is continually milked whether it is currently pregnant or not
<span>Drowsiness. Nausea. Dry mouth. Insomnia. Diarrhea. <span>Nervousness, agitation or restlessness.</span></span>