A study compared the mean of spinal canal cross-sectional area in subjects with disc herniation (group A) and subjects without disc herniation (group B). The researchers found that the mean of spinal canal cross-sectional area in group A is significantly different than that in group B, with a p-value of 0.03. Which of the following statements is true:

		It can be inferred that the study showed evidence to support that the means of spinal canal cross-sectional area are different between group A and B.
		The research hypothesis states that there is no difference between mean of spinal canal cross-sectional area between the two groups.
		The alternative hypothesis states that there is no difference between mean of spinal canal cross-sectional area between the two groups.
		The null hypothesis is not rejected.