Choice "B" is correct. If the financial statements of a prior period have been audited by a predecessor auditor whose report is not presented, the successor auditor should indicate in an Other-Matter paragraph of the report 1) that the financial statements of the prior period were audited by another auditor, 2) the date of the previous report, 3) the type of report issued by the predecessor auditor, and 4) if the report was other than an unmodified report, the substantive reasons therefor. The successor auditor may name the predecessor auditor only if the predecessor auditor's practice was acquired by or merged with that of the successor auditor.
Choices "c", "a", and "d" are incorrect, based on the above explanation.