Relational Algebra expression BUYER Name Alice Bob Carol Gender Female Male Female CARD Owner Alice Bob Bob Carol Limit 50 20 1234 4321 30 1000 PRODUCT Type Office Office ORDER Product Price Weight Buver Count en Pencil Notebook Office Camera Bike Skateboard Transport 50 Alice Alice Bob Alice Carol Carol en Notebook2 Bike 400 600 15000 1500 700 10 Electronic 3 Transport 100 i00 an Camera Skateboard1 Kitchen25 an Hand-compute the value expression and type-in (or write-in) the result set below the expression. 1 (PROJECT (BUYERAgg) (SELECT (Type office') (JOIN (ORDER Buyer = BUXER.Naus) (JOIN (PRODUCT PName = ORDER Product) PRODUCT, ORDER) BUYER))) (4 pts) Similarly, do it step-by-step A = (JOIN (PRODUCTPName = ORDERProduct) PRODUCT, ORDER) (Show work here) B = (JOIN ( BUYER.Name) A, BUYER) (Show work here) C (SELECT (Type (Show work here) - 'office') B) Result- (PROJECT (RUYERAge) C) (Show work here)