Critical Reasoning

The general availability of high-quality electronic scanners and color printers for
computers has made the counterfeiting of checks much easier. In order to deter such
counterfeiting, several banks plan to issue to their corporate customers checks that
contain dots too small to be accurately duplicated by any electronic scanner currently
available; when such checks are scanned and printed, the dots seem to blend together
in such a way that the word "VOID" appears on the check
A questionable assumption of the plan is that
A. in the territory served by the banks the proportion of counterfeit checks that
are made using electronic scanners has remained approximately constant over
the past few years
B. most counterfeiters who use electronic scanners counterfeit checks only for
relatively large amounts of money
C. the smallest dots on the proposed checks cannot be distinguished visually
except under strong magnification
D. most corporations served by these banks will not have to pay more for the new
checks than for traditional checks
E. the size of the smallest dots that generally available electronic scanners are
able to reproduce accurately will not decrease significantly in the near future.

Let me share my take on this one
arg says available scanners and printer has made counterfeiting easy.....so to stop this banks plan to issue checks that contain dots too small to be duplicated by scanner....if somebody tries to scan and print dot would seem to look like VOID
Now options eliminatino
i easily eliminated option A, B D
C arg talks about scanner and not human eye i mean visual so it is out
I marked E for this one using POE.....
But I am not able to reason out why E is correct/wrong here
Please explain