Effect of Base on E2 product One base is bulkier than the other, that's my observation. How does it affect the product? Could someone please give proper reasoning and the product? Thanks a lot. 

P.S.
I guess both follow E2
Under $E_2$ reaction conditions, the MeO$^-$ product will be



while the Me$_3$CO$^-$ product will be

.

This is due to the bulkiness of Me$_3$CO$^-$ being unable to reach the hydrogen at the substituted carbon so instead it goes to the primary position instead.