Which of the following is an improper integral?

a) integral from 0 to 3 of (x+1)/(3x-2) dx
b) integral from 0 to 3 of (x+1)/(3x-2) dx
c) integral from 0 to 3 of (x+1)/(3x-2) dx
d) None of these

3 answers

Why are the first three answers identical?
what happens when x= 2/3 ? Look at the (3x-2) term
I am sorry. These are the options:
a) integral from 0 to 3 of (x+1)/(3x-2) dx
b) integral from 1 to 3 of (x+1)/(3x-2) dx
c) integral from -1 to 0 of (x+1)/(3x-2) dx
d) None of these
please help me