Consider the following Haskell data type and function, and answer the questions below: data T a = LF a|N(Ta) (Ta) (Ta) fg (LFx)=xfg (Nlcr) = g(fgl) (g(fgc) (fgr)) (a) What does it mean for a data type to be polymorphic? (b) Is the data type T polymorphic? (c) What is the use of the identifier a in the Haskell code? (d) If possible, give an example of a value that has type T Int. (e) If possible, give an example of a value that has type T Char. 25 (f) Give some other (illuminating) example of a value involving type T. (g) What is the name of the function defined by the programmer in the Haskell code? (h) Can a Haskell function have more than one type? yes / no. Explain, give an example. If a function can have more than one type, is there a best type? yes / no. Explain, give an example. (i) What is the type of the following function? (j) Apply the function to some value. What is the result? (k) Describe what the function does