I only have one hour to answer this question and turn it in. Please answer this question:

Why are reverse-scored questions often included in surveys and tests? For example, in a hostility scale, answering yes to some questions might indicate greater hostility, while on other questions, a no answer might indicate hostility.

a. Frustrating participants often leads to strange patterns of responding that can be inferred as invalid

b. Reverse-coded items serve as a check for rote responding

c. Redundant items, one of which is reverse-coded, can be compared for conflicting responses and potentially removing participants from analysis

d. A and B

e. A and C

f. B and C