John is a self-employed computer consultant who lives and works in Dallas. John paid for the following activities in conjunction with his business. Which is not deductible in any amount?
1. Dinner with a potential client where the client's business was discussed.
2. A trip to Houston to negotiate a contract.
3. A seminar in Houston on new developments in the software industry.
4. A trip to New York to visit a school chum who is also interested in computers.
A. 4 only
B. 3 only
C. 2 only
D.None of these
E. 1 only