I have data like this in Excel:
ColA         ColB        ColC           ColD
1B                         1B            E 
2B                         4B            C
3B                         5B            E
4B
5B
I would appreciate a formula to be applied in ColB for the following result:
ColA         ColB        ColC           ColD
1B            E            1B            E 
2B                         4B            C
3B                         5B            E
4B            C
5B            E
 
     
    