Make one sentence properly and with conjunction words.
it doesn't make sense to say dial a telephone number. push button phones are used now.
1. it doesn't make sense to say dial a telephone number, because push button phones are used now.
2. it doesn't make sense to say dial a telephone number, however, push button phones are used now.
3. it doesn't make sense to say dial a telephone number and push button phones are used now.
4. none of the above sentences are written correctly.