John is a self$-$employed computer consultant who lives and works in Dallas. Johnpaid for the following activities in conjunction with his business. Which of thefollowing expenditures is not deductible in any amount?$1.$ Dinner with a potential client where the client's business was discussed$\mathrm{.}2.$ A trip to Houston to negotiate a contract$\mathrm{.}3.$ A seminar in Houston on new developments in the software industry$\mathrm{.}4.$ A trip to New York to visit a school chum who is also interested incomputers.O $3$ onlyO $4$ onlyO $2$ onlyO $1$ only