A patient may prevent dehydration by administering an intravenous (IV) drip containing an aqueous solution. An aqueous solution containing 0.85%-0.9% of sodium chloride or 5% of glucose is the only allotted amount of solution that can be introduced into the bloodstream. Determine if injecting sodium chloride solution prepared by adding 1.8g of sodium chloride in 150ml solution is harmful or not.
A. Not harmful because the concentration is zero.
B. Harmful because the concentration is equal to the required amount.
C. Harmful because the concentration is higher than the required amount.
D. Not harmful because the concentration is lower than the required amount ​