A Study of Teclistamab in Combination With Daratumumab Subcutaneously (SC) (Tec-Dara) Versus Daratumumab SC, Pomalidomide, and Dexamethasone (DPd) or Daratumumab SC, Bortezomib, and Dexamethasone (DVd) in Participants With Relapsed or Refractory Multiple Myeloma

Inclusion Criteria

• •Documented multiple myeloma as defined by the criteria: a. multiple myeloma diagnosis according to the International Myeloma Working Group (IMWG) diagnostic criteria, b. measurable disease at screening as defined by any of the following: 1) serum M-protein level greater than or equal to (\>=) 0.5 gram per deciliter (g/dL); or 2) urine M-protein level \>=200 milligrams (mg)/24 hours; or 3) serum immunoglobulin free light chain \>=10 mg/dL and abnormal serum immunoglobulin kappa lambda free light chain ratio
• •Received 1 to 3 prior line(s) of antimyeloma therapy including a proteasome inhibitor (PI) and lenalidomide; a. participants who have received only 1 line of prior line of antimyeloma therapy must be lenalidomide refractory. Stable disease or progression on or within 60 days of the last dose of lenalidomide given as maintenance will meet this criterion
• •Documented evidence of progressive disease based on investigator's determination of response by IMWG criteria on or after their last regimen
• •Have an eastern cooperative oncology group (ECOG) performance status score of 0, 1, or 2 at screening and prior to the start of administration of study treatment
• •Have clinical laboratory values within the specified range