When two moles of ethyl chloride react with two moles of sodium in the presence of ether what will be formed ?

When two moles of ethyl chloride react with two moles of sodium in the presence of ether what will be formed ?

A. 2 moles of ethane
B. 1 mole of ethane
C. 2 moles of butane
D. 1 mole of butane