Marla solved the inequality below incorrectly. What mistake did she make?
-5x - 3.5 < 6.5
-5x < 10
x > 2

a
She added 3.5 to both sides when she should have subtracted.
b
She should have divided both sides by negative 5 as her first step.
c
She should not have flipped the inequality symbol in her answer
d
She should have divided 10 by negative 5 and gotten a -2