bhumika.k.shah wrote:Oncologists report that cancer patients with brain tumors who receive a combination
of chemotherapy and radiation treatment do only as well, on average, as those
patients who receive radiation treatment alone. Yet the oncologists state that
chemotherapy is a necessary part of the treatment of all patients who receive them
for tumors.
Which of the following, if true, most helps to reconcile the oncologists' two claims?
(A) Oncologists treat all cancer patients who have tumors with either radiation
treatment alone or a combination of radiation and chemotherapy.
(B) Oncologists who prescribe these treatments make accurate determinations
about which patients need both radiation and chemotherapy and which need
radiation alone.
(C) Some tumors have been completely healed by a combination of radiation
and chemotherapy.
(D) Some tumors that have been exacerbated by improper attempts at
chemotherapy have been successfully treated with radiation.
(E) Patients with tumors in other areas of the body show more improvement
when treated with both radiation and chemotherapy than when treated with
radiation alone.

Source LSAT

bhumika.k.shah wrote:OA B

OE [spoiler]The best answer is B. This is a paradox question. The paradox, or apparent
contradiction, arises from the fact that the physicians in charge of treatment say
that all patients who receive both treatments need both treatments. And yet, the
patients who receive both treatments usually don't do any better than the patients
who receive only one treatment. This apparent contradiction is resolved by the
statement in answer choice B that the physicians are correctly identifying which
patients need both treatments and not giving both to patients who only need radiation.
In other words, patients are not randomly assigned to the two groups but
rather carefully selected by experts. Each of the other statements is irrelevant to
the resolution of the paradox.[/spoiler]

Now cn someone explain?