Nastech Pharmaceuticals Announced It Has Developed a Nasal Spray That

Nastech Pharmaceuticals announced it has developed a nasal spray that would reduce hunger cravings.Other things the same we would expect

A) the demand for existing shares of stock in this company to decrease,so the price would fall.
B) the demand for existing shares of stock in this company to increase,so the price would rise.
C) the supply of existing shares of stock in this company to decrease,so the price would fall.
D) the supply of existing shares of stock in this company to increase,so the price would rise.