Which one of the following correctly describes the location of some body parts in the earthworm $Pheretima$?

The earthworm is hermaphrodite. It has two pairs of testes, present in the 10th and 11th segments. This statement is correct.
The two pairs of accessory glands are present one pair each in the 17th and 19th segments, not in segments 16–18.
The four pairs of spermathecae are located in the 6th to 9th segments (one pair in each), not in segments 4–7.
The one pair of ovaries is attached at the intersegmental septum of the 12th and 13th segments, not the 14th and 15th.
Hence the correct description is two pairs of testes in the 10th and 11th segments.