What is the correct way to pass this as a body of an HTTP POST request?
data := "A group of Owls is called a parliament"
resp, err := http.Post("https://httpbin.org/post", "text/plain", &data)
resp, err := http.Post("https://httpbin.org/post", "text/plain", data)
resp, err := http.Post("https://httpbin.org/post", "text/plain", []byte(data))
resp, err := http.Post("https://httpbin.org/post", "text/plain", strings.NewReader(data))