Refer to the Following Scenario and Then Answer the Questions

Multiple Choice

Refer to the following scenario and then answer the questions that follow. A European species of marsh grass called Sparitina maritima has 2n = 60. A similar species native to North America, S. alterniflora, has 2n = 62. In 1835, the North American species was found growing near the European species near Southampton, England, having been accidentally imported. Occasional sterile hybrids were noted. In 1895, a new species, S. anglica, was first identified at Southampton and subsequently became very common. The new species has been identified as a fertile hybrid of the original two species.
-What is the 2n chromosome number of the sterile hybrids that form between the original two species, S. maritima and S. alterniflora?

A) 60
B) 122
C) 31
D) 61