Answer the following statements true (T) or false (F)

1 C# operators are evaluated from left to right.
2 The following are all valid variable names: _under_bar_, m928134, t5, j7, her_sales,
his_account_total, a, b, c, z and z2.
3 A valid C# arithmetic expression with no parentheses is evaluated from left to right.
4 The following are all invalid variable names: 3g, 87, 67h2, h22 and 2h.

1 False. Some operators (e.g., assignment, =) evaluate from right to left.
2 True.
3 False. The expression is evaluated according to operator precedence and associativity.
4 False. Identifier h22 is a valid variable name.