Consider the statements in respect of vapour absorption and vapour compression refrigeration systems.1. The former runs on low-grade energy.2. The pumping work in the former is negligible since the specific volume of the strong liquid solution is small.3. The latter uses an absorber while the former uses a generator.4. The liquid pump alone replaces compressor of the latter.Which of these statements are correct?

• A. 1 and 2
• B. 1 and 3
• C. 1 and 4
• D. 2 and 4