Tub King is a small company that refinishes antique claw foot bathtubs and antique sinks, and provides training for bathtub refinishing. The company’s management is currently conducting a formal study of its current strengths and weaknesses by looking at the company’s profit and sales histories and searching for opportunities and threats by studying consumer trends. Tub King is conducting a(n):.a) marketing audit. b) environmental scan. c) market differentiation scan. d) SWOT analysis. e) strategic window search.