Answer R$3\mathrm{.}3$ by copying the code over and then fixing it $($with comments to explain what you change$).$ Note that the fact that x$,$y$,$grade, and sum are not defined is not the error $-$ just set x $=0,$ y$=0,$ sum $=0,$ and grade$=75$ before running the parts. Hint: For part $($b$),$ something is missing to make sqrt$()$ work... Note: In part $($d$),$ you cannot type in xStr $=$ int$($input$("$Enter an integer value $"))-$ the int$()$ cast there defeats the purpose of looking at the string to see if it's a digit or not in the rest of part $($d$).$ Find the errors in the following if statements. a$.$ if x $>0$ then print$($x$)$

b$.$if$1+$x$>$x$**$sqrt$(2)$: y$=$y$+$x

c$.$ if x $=1$ : y$+=1$

d$.$ xStr $=$ input$("$Enter an integer value"$)$ x $=$ int$($xStr$)$if xStr$.$isdigit$()$ :

sum $=$ sum $+$ x

else :

print$("$Bad input for x$")$