Candidates are reviewed by four separate reviewers and their comments and scores which range from 1 (lowest) to 5 (highest) are stored on a review record that is a detail record for a candidatewhat is the best way to indicate that a combined review score of 15 of better is required to recommend that the candidate come in for an interview?A. Use a validation rule on a total score field on the candidate record that prevents a recommended field fomr being true if the total score is less than 15B. Use a workflow rule to calculate the sum of the review scores and send an email to the hiring manager when the total is 15 or betterC. Use visual workflow to set a recommended field on the candidate whenever the cumulative review score is 15 or betterD. Use a rollup summary field to calculates the sum of the review scores, and store this in a total score field on the candidate