Choose the sequence of steps that describes the best synthesis of 1-butene from ethanol:
A. `(1) NaC-= CH, (2) H_(2)`, Lindlar Ph
B. `(1) NaC-=CH, (2) Na, NH_(3)`
C. `(1) HBr,` heat, (2) `NaC-=CH, (3) H_(2)`, Lindlar Pd
D. `(1) HBr, "heat" , (2) KOC(CH_(3))_(3), DMSO, (3) NaC-=CH, (4) H_(2)`, Lindlar catalyst
