Which of the following statements is false?
a. References to interface types do not have access to method toString.
b. Method toString can be invoked implicitly on any object.
c. With inheritance, classes and their inherited classes tend to be very similar.
d. Dramatically different classes can often meaningfully implement the same interface.
a. References to interface types do not have access to method toString. Actually, all references, including those of interface types, refer to objects that extend Object and therefore have a toString method.
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Which of the following procedure declarations matches the call to the IsLetter procedure below?
``` Dim strText as String = txtInput.Text Dim blnLetter as Boolean = IsLetter(strText) ``` a. Sub IsLetter(ByVal strInput as String) as Boolean b. Sub IsLetter(ByVal blnResult as Boolean) as String c. Function IsLetter(ByVal strInput as String) as Boolean d. Function IsLetter(ByVal blnResult as Boolean) as String