- ABoth statements together are needed (neither alone is sufficient)
- BStatement II alone is sufficient but Statement I alone is not
- CEither statement alone is sufficient
- DStatement I alone is sufficient but Statement II alone is not
Step-by-Step Solution
Statement I narrows it to Wednesday or Thursday (not enough alone). Statement II alone rules out only Wednesday. Together: it must be Thursday. So both are needed.
Answer: A) Both statements together are needed (neither alone is sufficient)