A constant force F applied to the lower block of mass 15 kg makes...

Options

1. A$1.96 \mathrm{~m} / \mathrm{s}^2$ and $1.96 \mathrm{~m} / \mathrm{s}^2$
2. B$1.96 \mathrm{~m} / \mathrm{s}^2$ and $3.92 \mathrm{~m} / \mathrm{s}^2$
3. C$0.98 \mathrm{~m} / \mathrm{s}^2$ and $0.49 \mathrm{~m} / \mathrm{s}^2$
4. D$0.98 \mathrm{~m} / \mathrm{s}^2$ and $1.96 \mathrm{~m} / \mathrm{s}^2$