Answer:
The
correct answer is c.
A horizontal spread is also called a time
spread or a calendar spread. The terms of the two
contracts are identical except for the expiration
date. This strategy is called horizontal because
the expiration dates are arrayed horizontally in
newspaper quotes. Therefore, the correct answer is c: "Short
1 XYZ Mar 30 Put; long 1 XYZ Nov 30 Put".
The remaining options are incorrect because:
1) "Long 1 ABC Jan 50 Call; short 1 ABC Jan
60 Call" is a vertical or price spread
2) "Buy 1 FBN Aug 50 Call; Long 1 XYZ Aug 50
Put" is a long straddle.
3) "Write 1 PDQ Feb 35 Call; Buy 1 PDQ Apr 45
Call" is a diagonal spread.