4. (10 points) The bell of 2013 has rung, and Brother Xiaoming sighed: This is the first time in my life that I will go through a year with no repeated digits. It is known that Brother Xiaoming was born in a year that is a multiple of 19. Therefore, in 2013, Brother Xiaoming's age is ( ) years old.
A. 16
B. 18
C. 20
D. 22
【Analysis】From 1990 to 2012, each year contains repeated digits, among which the number that is a multiple of 19 is only $1900+95=1995$, then use $2013-1995$, and solve accordingly.

【Solution】Solution: From 1990 to 2012, each year contains repeated digits, among which the number that is a multiple of 19 is only $1900+95=1995$, $2013-1995=18$ (years old);

Therefore, choose: $B$.