confused

grandh01 wrote:The nation's three military academies have seen a dramatic rise in applications, one
fueled by a resurgence 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

I'm confused with the parallelism in this sentence, someone explain please.
Thanks in advance

vk_vinayak wrote:Mitch,
Also, if the options were as mentioned below, which one to choose?:

E) one fueled by a resurgence of patriotism, increasing tuition costs at private colleges, and improved recruiting by the academies.
F) fueled by a resurgence of patriotism, increasing tuition costs at private colleges, and improved recruiting by the academies.