SSC Steno Grade C and D 5 Feb 2019 Shift 2 Paper

The statements below are followed by four conclusions labeled I, II, III and IV. Assuming that the information in the statements is true, even if it appears to be at variance with generally established facts, decide which conclusion(s) logically and definitely follow(s) from the information given in the statements.
Statements:
No laptop is notebook,
All notebooks are tablets.
Conclusions:
I. No laptop is tablets,
II. No tablets is laptop.
III. Some tablets are notebooks.
IV. All the tablets are notebooks.