Proportion of which of the following should beincreased in diet to improve strength and growth of bones? [Guj CET]

• A. Vitamin-D, \[\text{C}{{\text{a}}^{\text{2+}}}\] and vitamin-K
• B. Vitamin-D, \[\text{C}{{\text{a}}^{\text{2+}}}\] and iodine
• C. Vitamin-D, \[\text{C}{{\text{a}}^{\text{2+}}}\] and vitamin-A
• D. Vitamin-A, \[\text{C}{{\text{a}}^{\text{2+}}}\] and \[\text{Z}{{\text{n}}^{\text{2+}}}\]