question attached

BSE (bovine spongiform encephalopathy) is a prion disease of cattle commonly known as "mad cow disease". It is thought to be spread through infected meat products and to be possible transmissible to humans. Assume that a test for BSE has a sensitivity of 98.5% (that is, an infected cow has a 98.5% chance of testing positive) and a specicity of 99.97% (an uninfected cow has a 99.97% chance of testing negative). Imagine a population in which 1 in every 120,000 cows is infected with BSE. If a cow randomly selected from this population tests positive, what is the probability that it actually has BSE? 1"? About 2.7% if? About 98.5% f? About 0,0009% 1"? About 43% if? About 99.97%