Some information is missing in the profile notes below. You are to fill in the blanks A$,$ B$,$ C$,$ and calculate the percent grade from station $0+38$ to $2+50.$ You need not completely reduce these notes, but do show the adjusted H$.$I$\text{'}$s$.$

$\backslash$table$[[$BM$/$Sta$.,$BS $+,$HI$,$FS $-,$Int. FS$,$Elev.,Adj. El$.],[$BM B$,,,4\mathrm{.}13,,$C$.,{311\mathrm{.}77}^{**}$