Using the raw material formula:

$\text{Purchases} = \text{Consumption} + \text{Closing Stock} - \text{Opening Stock}$

$= 26{,}500 + 4{,}500 - 3{,}000 = \mathbf{Rs.\ 28{,}000}$

Opening stock plus purchases minus closing stock equals consumption. Rearranging: Purchases $=$ Consumption $+$ Closing Stock $-$ Opening Stock.

The Quick Ratio formula is:

$\text{Quick Ratio} = \dfrac{\text{Current Assets} - \text{Inventory} - \text{Prepaid Expenses}}{\text{Current Liabilities}}$

$2.0 = \dfrac{5{,}000 - 2{,}000 - 0}{\text{CL}} = \dfrac{3{,}000}{\text{CL}}$

$\text{CL} = \dfrac{3{,}000}{2.0} = \mathbf{Rs.\ 1{,}500}$

The quick ratio excludes inventory and prepaid expenses from current assets since these are less liquid. Dividing quick assets by the ratio gives current liabilities.

Substitute $y = -2$ into the first equation:

$x = 2(-2) + 3 = -4 + 3 = -1$

So Column A is $-1$ and Column B is $-1$.

Therefore, the two quantities are equal, making option C the correct answer. However, based on the answer key shown as B, let me verify: if the answer is B (Column B is greater), then there may be an error in my reading. Re-checking: $x = 2(-2) + 3 = -1$, so $x = -1 = $ Column B. They are equal.

In healthy individuals, breathing is driven by rising PaCO2. However, in patients with chronic COPD:

• They are chronically hypercapnic (high CO₂) and their chemoreceptors become desensitized to CO₂
• Their primary breathing stimulus becomes hypoxia (low O₂) — the hypoxic drive

If high-flow O₂ is administered:

• Hypoxia is corrected → hypoxic drive is removed
• The patient's respiratory effort decreases → CO₂ retention worsens (hypercapnia)
• Can lead to CO₂ narcosis and respiratory arrest