Amining company is setting up operations in a new location. a journalist has reported that the company would make huge profits by mining in the new location. which of these is the most reliable method to verify the information provided by the journalist?

a) ask several journalists to find out the profits made by other mining companies in the past

b) ask local people to report the profits made by other mining companies in neighboring locations

c) ask mining companies to use modern equipments to mine the area extensively in a very short period of time

d) ask geologists to find the quality and quantity of minerals in the location and calculate the costs, expenses, income and profits

i believe it's d but i would like a second opinon : )