Which is an example of a valid input statement? $1)$ scanf$\_$s$("\%$i$",$ &input$)$; $2)$ Attach the peripheral device$\mathrm{.}3)$ printf$("$The tax rate is: $\%\mathrm{.}2$lf$",$ taxRate$)$; $4)$scanf$\_$s$("$Please enter the tax rate: $\%\mathrm{.}2$lf

$",$ &taxRate$)$; from the above options which is the corrcet option find and explain why other options are in correct explaian each and every option in detailed.