Question XII (5 points) Write a relational algebra expression that returns the manufacturer name whose cars won the greatest number of races.

Instructions When writing a query, write the query in a way that it would work over all possible database instances and not just for the given example instance! Consider the following database schema and example instance for a race car database: Good luck Car Racer A ID Name 1 Sam 2 Suzan 3 Alice Gender Birth_year M 1984 F 1982 F 1980 CID Manufacturer Horse_power Nbr of cylinder C1 Mercedes 1200 6 C2 Ferrari 2400 8 Mercedes 800 4 Result Race Sponsor RID R1 Result DC_ID R_ID A_ID Time R1 1 c1 R11 400 R1_2 C2 R1 |2 600 R1 3 C3 3 375 R D Type Location R1 F1 UK R2 RallyCross Portugal R3 F1 USA CID Sponsor C1 Motorola C3 C4 Michelin Pepsi R1 R2 R1 Schema: Racer: (A_ID, Name, Gender, Birth_year) Race (R_ID, Type, Location) Result (Result_ID, C_ID, A_ID, R_ID, Time) C_ID is a foreign key for car and A_ID is foreign key for Racer and R_ID is a foreign key for Race. Sponsor (R_ID, C_ID, Sponsor) Car (C_ID, Make, Horsepower)