2 [10 points) 3. Actions such as sneezing, coughing, speaking loudly and singing emit micro-droplets (droplets of size - 1 micron) that cannot be seen by the naked eye. Studies have shown that such droplets spread across a room in about 20 minutes. Consider a person sneezing in a room. If it is found that, 20 minutes after the sneeze, the concentration of micro-droplets at a location 12 feet (appx. 4 m) away was 1/10th of that present at the location right above where the sneeze occurred, then evaluate the dispersion coefficient of these droplets. 0.35 0.00 0.65 0.70 0.75 0.50 1.3 1.4 1.5 1.6 1.7 0.625 0.es 0,10 0.15 0,20 0.25 0.10 0.15 0.40 0.43 0.50 0 0.0789 0.0564 0.1125 0.160 0.2222 0.2763 0.376 0.3794 0.4254 04755 0.5209 0.5633 0. 0.6400 0.67 0.7112 0.7421 0.7707 0.7970 0.8.209 0.8-07 0.9140 0.9525 0.9461 0.9763 09836 0981 . . 0.98 0.99 D. 0.9999 1.9 2.0 2.2 2.4 26 0.90 0.55 1.0 12 0.9103