Mashaal Masha
$H=120p+60$

The Karvonen formula above shows the relationship between Alice's target heart rate $H$, in beats per minute (bpm), and the intensity level $p$ of different activities. When $p=0$, Alice has a resting heart rate. When $p=1$, Alice has her maximum heart rate. It is recommended that $p$ be between 0.5 and 0.85 for Alice when she trains. Which of the following inequalities describes Alice's target training heart rate?
Difficulty: Medium
A: 

$120\leq H\leq 162$

B: 

$102\leq H\leq 120$

C: 

$60\leq H\leq 162$

D: 

$60\leq H\leq 102$

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