Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the correct order to form a meaningful and coherent paragraph.

A. Symptoms like nervousness, increased heart rate and feeling weak are some of the starting signs of anxiety.
B. Whereas anxiety attacks, sweating, trembling and having a feeling of impending danger might suggest advanced anxiety levels.
C. Most people don't even realise they have anxiety or take corrective measures until it amplifies and gets out of control.
D. Anxiety is a sad reality of today's time that has plagued a number of us in a variety of different ways.