$(4)$ In $=V\frac{L}{O}O$ KUP$(dots)$ function, the $4$th parameter is either TRUE or FALSE, where TRUE is

for approximate match, FALSE is for exact match. And by default it is TRUE $($i$.$e$.,$ if no $4^{th}$

parameter, it means TRUE.$)$ And if TRUE, the first column of the array must be sorted in

ascending order.

a$.$ True

b$.$ False