Which of the following statement are true from reliability for a research tool?(a) Reliability is fixed for a given testing tool(b) It is correlation of scores on the testing tool itself(c) Reliability can have negative value(d) It varies from sample to sample(e) It is affected by variance of scoresChoose the correct option:

• A. (a), (c) and (d)
• B. (b), (d) and (e)
• C. (a), (b) and (d)
• D. (c), (d) and (e)