blasius2669 blasius2669 12-04-2024 Business contestada For an ASTM grain size of 7, approximately how many grains would be per square inch without any magnification. Select oneA. 1.28' * 10 deg * 6B. 2.56 deg * 10 deg * 8C. 1.28*10⁸D. 2.56ᵖrime prime 10 deg * 6