Consider the following testbench. module tb logic a,b,c; somemodule dut (a,b.c); initial begin a-1'b1; b-1-b1; #10; f (c1 b1) Sdisplay(error!'); a-1'b0: #10; if (C1 b0) Sdisplay(error!); b-1b0: #10; if (c1'b0) Sdisplay(error!"); a-101; #10; if (c1b0) Sdisplay(error!); end endmodule What function does module "somemodule" perform? Select one: a. cannot be determined O b. and-gate O C. nand-gate O d. or-gate O e. nor-gate