In the following question, a small paragraph is given from which five words have been replaced with a blank. These words, represented by a letter, are given below the paragraph, in random order. Rearrange these words in an appropriate order so that these fit in the blanks and give out a grammatically and meaningfully coherent paragraph.

Before alarm clocks and way before smartphone alarms, there were ______ called knocker-uppers who would _______knock on people’s window to wake them up in time for work. Up until the 1970s, knocker-uppers ______ a long stick, soft hammers, rattles, or even pea shooters to ____ their ____’ windows!

A. Clients' B. Reach C. People  D. Literally  E. Used