Which of the following is a periodic sentence?

A、Iwonderedwhereiwasgettingmystrength.;
B、Evennow,backonterrafirma,walkingdownaVermontroad,isometimeshearanairplane.;
C、Myglamorousaislematetookouthercellphoneandpassediraroundtoanyonewhowantedtomakeacall.;
D、Nowwebeganaroller-coasterridethroughthethunderclouds.