Fix the symbols $$+, -, \times, \div$$ appropriately in the box to fit the equation given here.

$$100 \Box 25 \Box 5 \Box 5 \Box 21 = 0$$

A

$$-, \div, \div, \times$$

B

$$\div, +, \times, -$$

C

$$\div, \times, -, +$$

D

$$\div, -, \times, +$$