Read the excerpt. from “my last duchess” by robert browning . . never read strangers like you that pictured countenance, the depth and passion of its earnest glance, but to myself they turned (since none puts by the curtain i have drawn for you, but i) and seemed as they would ask me, if they durst, how such a glance came there; . . what does the speaker indirectly reveal about himself when he conveys that only he opens the curtain in front of the portrait? a. that he is knowledgeable and b. that he is proper and polite c. that he is possessive and controlling d. that he is introspective and private