When solving an inequality, when must you reverse the direction of the inequality symbol? choose the correct answer below. a. if a negative number is subtracted from both sides of an inequality, the direction of the inequality symbol must be reversed. b. if both sides of an inequality are multiplied or divided by a negative number, the direction of the inequality symbol must be reversed. c. if a negative number is added in both sides of an inequality, the direction of the inequality symbol must be reversed.