Find f{r}'(t) , the derivative of f{r}(t) , where f{r}(t) = 6√{t} f{i} + t² √{t} f{j} + ln(t²) f{k}
A) {3}/{√{t}} f{i} + {5}/{2}t{{5}/{2}} f{j} + {2}/{t} f{k}
B) {3}/{2√{t}} f{i} + {5}/{2}t{{5}/{2}} f{j} + {1}/{t} f{k}
C) {3}/{√{t}} f{i} + {5}/{2}t{{3}/{2}} f{j} + {2}/{t} f{k}
D) {3}/{2√{t}} f{i} + {5}/{2}t{{3}/{2}} f{j} + {1}/{t} f{k}