A researcher believed that women in their 20s drank more soda per day than men

A researcher believed that women in their 20s drank more soda per day than men. Which of the following was the null hypothesis?

a. The amount of Soda women drank per day was greater than the amount of Soda men drank per day.

b. The amount of Soda women drank per day was equal to the amount of Soda men drank per day.

c. The amount of Soda women drank per day was smaller than the amount of Soda men drank per day.

d. The amount of Soda women drank per day was greater than or equal to the amount of Soda men drank per day.