During a pregnancy ultrasound, a cow in your herd tests 'open' for the third year in a row. Overall, the cow appears to be in good health. Which of the following is the most economical option for your herd?
A) Cull the cow from the herd
B) Keep the cow and try again next breeding season
C) Consult a veterinarian for fertility treatments
D) Implement nutritional supplements for the cow