Use the information for the question(s) below Retings Last Sale Bond issuer Name CouponMaturty Callable Moody's S&P Eitch Price eld MLGG I MARKEL CORPORATION 70005/152008Yes Baa 888888 98400 44681 The above information is for a corporate bond issued by the Markel Corporation. What sort of bond is this? sources O A. a high-yield bond O B. an investment grade bond O C. a high-risk bond O D. a speculative bond