d) (r4)= 6) Let p,q, and r be the following propositions: p : "The dog is large", q : "the dog is friendly", r : "the dog is small", and t:" the dog is aggressive". Write the following statement using formula including p,q, r,and t and logical connectives. [0.5pt] "The dog is aggressive whenever it is large." (a) pt b) tp c) Pt d) tp