How concealment penalty is calculated

Hi,

I want to know how to calculate concealment penalty in below example , I have heard that income tax can make penalty from 100 - 300 percent on the concealed income (my question is related to earlier AY 13-14)

Suppose Assessing officer has assessed 2 lakh rupees of concealed income and if tax payable on this 2 lakh rupees is 40,000 rupees how much penalty amount will come if 100 percent is levied.

a - 2 lakh rupees

b - 40000 rupees

Thanks