When looking at phylogenetic trees such as this you should always remember that the species that have a very close common ancestor are closely related and the further away their common ancestor is, the less related they are.
So, as you can see in the picture shown in green, modern camels are very closely related to Eschiatus and distantly related to Stemylus, so the first statement is not true, but the second statement is (shown in red)
As you can see shown in light blue, the modern camel is very closely related to Camelops and the Aepycamelus is a distant relative, so the third statement is true.
Procamelus and Stenomylotus are more likely to share similar features ( statement 5, shown in brown) than Pliauchenia and Oxidatus ( statement 4, shown in purple) because their last common ancestor is closer.
