If the strMsg variable contains the string “The party is Saturday.”, which of the following assigns the number 13 to the intNum variable? a. intNum = strMsg.Substring(0, "S") b. intNum =...

If the strMsg variable contains the string “The party is Saturday.”, which of the

following assigns the number 13 to the intNum variable?

a. intNum = strMsg.Substring(0, "S")

b. intNum = strMsg.Contains("S")

c. intNum = strMsg.IndexOf("S")

d. intNum = strMsg.IndexOf(0, "S")