A scientist is investigating if the mean air temperature (airT_Sept_mean) is different between different vegetation types (VEG_TYPE). Given the output of the ANOVA below, and a significance level of 0.1, which is/are true (more than one can be true)?
> summary (aov(airt_Sept_mean-VEG_TYPE)) Df Sum Sq Mean Sq F value Pr(>F) VEG_TYPE 6 0.000264 *** Residuals 70 signif. codes: 0 ***** 0.001 ***' 0.01 **' 0.05.' 0.1''i
24 observations deleted due to missingness

a. The mean air temperature varies depending on the vegetation type
b. There are 8 vegetation types in the dataset
c. There are 6 vegetation types in the dataset
d. The sample size used for this analysis (i.e. the total number of points across all the groups) is 77