Which arrangement shows 26/4 , 6.45, 6 2/5 , and 50/8 in order from least to greatest?

A) 6 2/5 , 50/8 , 6.45, 26/4

b) 50/8 , 6 2/5 , 6.45, 26/4

c) 26/4 , 50/8 , 6 2/5 , 6.45

d) 50/8 , 6 2/5 , 26/4 , 6.45