The largest possible remainder should be at least $$1$$ smaller than the divisor. 
Fill in the blanks below with the largest possible numbers:  ~\uline{~~~~~~~~~~}~$$\div16 = 5\rm R$$~\uline{~~~~~~~~~~}~.  ~\uline{~~~~~~~~~~}~$$\div16 = 5\rm$$ $\cdots\cdots$~\uline{~~~~~~~~~~}~. 
a: 105, 15 
b: 95, 15 
c: 88, 13 
d: 64, 16 