18. What is true in the following for blocked stock and GR blocked stocka. Blocked is valuated and GR is non Valuatedb. Blocked is non- valuated and GR is valuatedc. Both are valuatedd. Both are non-valuated19. What is document type for Stock Transport Orders and what are the Prerequisites for transferring stock between two plants?a. Plant to Plantb. Storage Location to Storage Location1. Change Stock Type2. Batch Number3. Material Number