b) Composition. b.1 Consider these functions that format HTML elements: def htmlTaglelem: String, inner: String) = "%5%>".format(elem, inner, elem) xal mkbeld = (inner: String) => htmlTag("B", inner) Define in object p4's main method an immutable variable called mkItalic initialized with a lambda expression that is similar to mkBeld but instead of returning a boldface element (like mkkeld it returns an italic face element, .... b.2 Define in object p4's main method an immutable variable called mkBoldItalic initialized with a lambda expression that uses the compose method from trait Function and the two lambda expressions, mkBold and mkitalic to format an italic bold font style with the composed element ... . 6.3 Define in object p4's main method an immutable variable called mkItalicBeld initialized with a lambda expression that uses the and Then method from trait Function2 and the two lambda expressions, mkBold and mkitalic to format a bold italic font style with the composed element I>./B>