You have been provided the following data on the securities of three firms and the market:

Security	E[Ri]	i	iM	i
A	0.13	0.12	.75	0.90
B	0.16	.275	0.40	1.10
C	0.25	0.24	0.75	1.8
Market	0.15	0.10	1	1
Risk-free asset	0.05	0	0	0

Suppose that you are currently holding a portfolio consisting of Firm B only. If you increase your portfolio weight on Firm B by 0.2 (or 20%) and borrow the needed money at the risk-free rate, what will be the new standard deviation of your portfolio?