We have

First, we need to do the operation above

So we will do all the options and if the result is the same as the result above the expression is equal to the given.
A. (3.15) × (0.45)=1.41
B. (3.15) ÷ (0.45)=7
C. (3.15) × 1/0.45=7
D. (3.15) ÷ 45/100=7
E. (3.15) ÷ 100/45=1.41
F. 0.45/3.15=0.14
As we can see the expressions that are equals are B,C,D