The following shell script is used to count the number of positives integer, negative integer entered in command line./bin/sh count Pos = 0 countNeg = 0 for num in S# do if [num > 0] then count POS = 'expr $count Pos + 1' elif [num < 0] then Count Neg = 'expr $countNeg + 1' fi done echo There are $countPos positive numbers and $countNeg negative numbers Which line(s) is(are) incorrect? And how to correct it (them)? Please write down your correction for that line (those lines).