A random sample of 25 university students was obtained and each was asked to report their actual weight and what they wished as their ideal weight. A 95% confidence interval for 'lowercase d-bar' (mean difference) between their ideal and actual weight was (0.8 lbs to 2.2 lbs). Based on this interval, which null hypothesis below (versus a two-sided alternative) can be rejected?
A. H-knot: lowercase delta = 0.5 lbs
B. H-knot: lowercase delta = 0.9 lbs
C. H-knot: lowercase delta = 1.7 lbs
D. H-knot: lowercase delta = 2.1 lbs
E. H-knot: lowercase delta = 1.3 lbs