Type of oesophagus, where oesophagus is ventrally lobed is

Answer: Option B

The type of oesophagus, where oesophagus is ventrally lobed is Helicotylenchus type.
Lip region with small abial disc, with 4 - 5 annuIi, 6 fLm % 0.5 wide and 3 - 4 fLm high with the well-developed labial framework.
Oesophagus is long with large rounded median bulb, long isthmus and oesophageal glands overlapping intestine ventrally and dorsally.
Phasmids pore-like situated at anus level, tram 2 annuIi posterior to 6 anterior to it and in the middle of the inner two incisures or closer to the ventral one.