Parts (pid serial primary key, pname varchar (10), pmaterial varchar(10), pcolor varchar (10), pprice float); Using the parts schema discussed in class, consider the query: Find the id, and name for all red parts. What is the relational algebra expression for the query? Seleccione una: O a. Tipid,pname ( Opcolor='red' (Parts)) O b. Tipid,pname (Parts) O c. Opcolor='red' (TT pid,pname(Parts)) O d. Both b and c O e. None of the above