Please choose the correct ending to complete the given sentence: Finance and Business: [header] How to invest in natural gas [title] Look for companies and equities that focus on natural gas exploration, pipeline development and refining. [step] This will introduce you to natural gas and help you feel comfortable in the stock market. [substeps] Buy stock in companies such as exxon mobil, devon energy, cabot oil & gas, chesapeake energy and other businesses that include natural gas in their energy development.

Ending1: Look at project managers who certify that they're making natural gas based investments. Ask them questions about their source of natural gas. Ending2: An even better way to expose yourself to natural gas would be to know the trading phase and read all natural gas futures before investing. [title] Know your industry to keep up with normal buying. Ending3: [title] Choose companies that will offer you reliable dividend yields. [step] This will allow you to decide if you want to invest for the long term or receive payouts on a regular but short-term basis. Ending4: [title] Attend seminars or conferences that teach you how to make natural gas. [step] Do research to get a sense of how natural gas influences environmental policies and crops.

Answer format: ending1/ending2/ending3/ending4