What would be the output of the following program? Please note that the operation x%10 (i.e., x modulo 10 ) is always the same as the rightmost digit of ( e.g., 123%10=3). tt=3 zz=18 yy=17 def bat(): global yy tt=zz+13 yy=zz+tt yy+=zz return yy def hen(): tt = zz +7 tt = bat() return tt def cat(): global zz z=yy+11 bat() def ant(): global yy tt=zz+13 yy=zz+tt yy+zz hen() return yy last_digit =( hen ()+cat()+tt+zz+yy)%10 print(last_digit) None of these options