r - Sorting rows alphabetically

Question

My data looks like,

A    B    C    D
B    C    A    D
X    Y    M    Z
O    M    L    P

How can I sort the rows to get something like

A    B    C    D
A    B    C    D
M    X    Y    Z
L    M    O    P

Thanks,

Answer 1

t(apply(DF, 1, sort))

The t() function is necessary because row operations with the apply family of functions returns the results in column-major order.