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Jonah recorded the temperature outside for $7$ hours. The temperature dropped $3$ degrees each hour for the first $6$ hours and then rose by $2$ degrees in the last hour. The expression $(-3)(6)+2$ represents the net change in temperature over the $7$ hours.$\newline$What value represents the net change in temperature in that time?$\newline$(A) $-20$$\newline$(B) $-16$$\newline$(C) $20$$\newline$(D) $16$