The correct answer is:
A.) Modern camels share an evolutionary relationship with Aepycamelus, but they didn't directly evolve from them.
According to image and the evolution of the camels and their closer relatives, we can conclude that both the modern camels and the aepycamelus share a common ancestor, the ancestor being the protylopus. The protylopus than split into two groups, one of which gave the rise of the camels, while the other of the aepycamelus (giraffe-camel).
The aepycamelus is an extinct species, but even though it is related with the modern day camels, it is not their closest extinct relative, in fact, the closest extinct relative of the camels is the stenomylus (gazelle-camel) with which they share a more common ancestor in the proebrotherium.