Sentence Correction

The nation's three military academies have seen a
dramatic rise in applications,one fueled by a resur-
gence of patriotism, increasing tuition costs at
private colleges, and improved recruiting by the
academies.
(A) one fueled by a resurgence of patriotism,
increasing tuition costs at private colleges,
and improved recruiting by the academies.
(B) one fueled by a resurgence of patriotism, tuition
costs that have increased at private colleges,
and academies improving their recruiting
(C) one fueled by a resurgence of patriotism,
private colleges that increased their tuition
costs, and recruiting improvements by the
academies
(D) fueled by a resurgence of patriotism, tuition
costs increasing at private colleges, and
academies improving their recruiting
(E) fueled by a resurgence of patriotism, increasing
tuition costs at private colleges, and
academies improving their recruiting

OA is A, can someone explain how