When a graph is plotted between $\log (x/m)$ and $\log P$,it is a straight line with an angle of $45^o$ and an intercept of $0.3010$ on the $y-$axis. If the initial pressure is $0.3 \ atm$,what will be the amount of gas adsorbed per $g$ of adsorbent $(x/m)$?

• A
  $0.4$
• B
  $0.6$
• C
  $0.8$
• D
  $0.1$